Big Brother 1999 was een interressant gebeuren. Vooral het nieuwe concept van het programma en de combinatie met het Internet zorgde voor een hype. Om enig idee te geven van de populariteit van het programma worden hieronder de kijkdichtheidscijfers weergegeven (bron: Intomart). Om de veelheid aan cijfers iets te beperken zijn de herhalingen weggelaten.
Grote uitzendingen op donderdag avond
| Datum | Kdh 6+ | Kdh 6-12 | Kdh BDS2049 | Kijkers * 1000 |
| 16/9/1999 | 8.1 | 1144 | ||
| 23/9/1999 | 8.4 | 0.2 | 12.9 | 1186 |
| 30/9/1999 | 8.8 | 0.0 | 13.0 | 1243 |
| 7/10/1999 | 8.9 | 0.3 | 14.0 | 1257 |
| 14/10/1999 | 8.5 | 0.9 | 13.0 | 1200 |
| 21/10/1999 | 14.0 | 2.0 | 21.7 | 1977 |
| 28/10/1999 | 12.5 | 1.9 | 19.6 | 1765 |
| 4/11/1999 | 11.3 | 0.3 | 18.3 | 1596 |
| 11/11/1999 | 14.9 | 1.5 | 23.1 | 2104 |
| 18/11/1999 | 11.9 | 0.8 | 19.0 | 1680 |
| 25/11/1999 | 14.9 | 2.0 | 23.5 | 2104 |
| 2/12/1999 | 11.3 | 1.0 | 17.9 | 1596 |
| 9/12/1999 | 14.1 | 0.8 | 22.4 | 1991 |
| 16/12/1999 | 11.5 | 0.9 | 18.4 | 1624 |
| 23/12/1999 | ||||
| 30/12/1999 | 25.1 | 10.7 | 32.0 | 3544 |
Normale uitzendingen op werkdagen
| Datum | Kdh 6+ | Kdh 6-12 | Kdh BDS2049 | Kijkers * 1000 |
| 17/9/1999 | 6.5 | 918 | ||
| 20/9/1999 | 5.7 | 1.8 | 8.4 | 805 |
| 21/9/1999 | 5.1 | 1.0 | 8.1 | 720 |
| 22/9/1999 | 4.6 | 1.6 | 6.8 | 650 |
| 23/9/1999 | 5.4 | 3.1 | 7.3 | 762 |
| 24/9/1999 | 5.5 | 3.7 | 7.7 | 777 |
| 27/9/1999 | 6.0 | 2.0 | 9.5 | 847 |
| 28/9/1999 | 6.7 | 2.2 | 10.7 | 946 |
| 29/9/1999 | 6.3 | 3.1 | 10.0 | 890 |
| 30/9/1999 | 5.9 | 3.4 | 8.4 | 833 |
| 1/10/1999 | 7.1 | 5.8 | 9.0 | 1003 |
| 4/10/1999 | 7.5 | 3.4 | 11.1 | 1059 |
| 5/10/1999 | 7.6 | 2.9 | 11.0 | 1073 |
| 6/10/1999 | 7.1 | 2.3 | 10.9 | 1003 |
| 7/10/1999 | 7.5 | 3.5 | 12.8 | 1059 |
| 8/10/1999 | 7.6 | 3.4 | 10.4 | 1073 |
| 11/10/1999 | 7.8 | 3.1 | 10.3 | 1101 |
| 12/10/1999 | 7.7 | 3.8 | 10.3 | 1087 |
| 13/10/1999 | 7.5 | 3.7 | 11.3 | 1059 |
| 14/10/1999 | 6.9 | 3.0 | 10.9 | 974 |
| 15/10/1999 | 6.7 | 4.0 | 8.8 | 946 |
| 18/10/1999 | 10.1 | 4.9 | 14.9 | 1426 |
| 19/10/1999 | 8.1 | 6.3 | 11.7 | 1144 |
| 20/10/1999 | 9.5 | 4.9 | 14.7 | 1341 |
| 21/10/1999 | 11.1 | 5.5 | 15.6 | 1567 |
| 22/10/1999 | 11.8 | 6.8 | 15.9 | 1666 |
| 25/10/1999 | 10.5 | 6.3 | 15.4 | 1483 |
| 26/10/1999 | 10.6 | 5.5 | 15.9 | 1497 |
| 27/10/1999 | 10.2 | 5.4 | 15.2 | 1440 |
| 28/10/1999 | 8.7 | 6.7 | 13.3 | 1228 |
| 29/10/1999 | 11.2 | 5.9 | 15.6 | 1581 |
| 1/11/1999 | 11.1 | 9.1 | 16.6 | 1567 |
| 2/11/1999 | 11.8 | 9.6 | 16.9 | 1666 |
| 3/11/1999 | 10.7 | 9.2 | 14.6 | 1511 |
| 4/11/1999 | 11.7 | 11.1 | 17.0 | 1652 |
| 5/11/1999 | 10.0 | 8.3 | 14.3 | 1412 |
| 8/11/1999 | 12.7 | 9.4 | 18.4 | 1793 |
| 9/11/1999 | 10.2 | 8.9 | 14.5 | 1440 |
| 10/11/1999 | 11.0 | 9.6 | 16.1 | 1553 |
| 11/11/1999 | 10.9 | 7.5 | 16.5 | 1539 |
| 12/11/1999 | 10.9 | 11.6 | 13.3 | 1539 |
| 15/11/1999 | 11.2 | 7.0 | 14.9 | 1581 |
| 16/11/1999 | 11.1 | 8.9 | 15.7 | 1567 |
| 17/11/1999 | 11.4 | 9.0 | 16.2 | 1610 |
| 18/11/1999 | 10.6 | 7.2 | 15.4 | 1497 |
| 19/11/1999 | 10.3 | 8.9 | 15.4 | 1454 |
| 22/11/1999 | 12.6 | 9.1 | 18.2 | 1779 |
| 23/11/1999 | 10.4 | 7.4 | 15.3 | 1468 |
| 24/11/1999 | 10.6 | 1496 | ||
| 25/11/1999 | 11.0 | 7.7 | 15.6 | 1553 |
| 26/11/1999 | 9.7 | 8.2 | 11.7 | 1370 |
| 29/11/1999 | 10.6 | 5.0 | 16.5 | 1497 |
| 30/11/1999 | 10.0 | 4.6 | 16.2 | 1412 |
| 1/12/1999 | 10.2 | 6.2 | 15.0 | 1440 |
| 2/12/1999 | 9.0 | 4.7 | 13.8 | 1271 |
| 3/12/1999 | 9.6 | 8.2 | 14.5 | 1356 |
| 6/12/1999 | 11.5 | 5.6 | 18.2 | 1624 |
| 7/12/1999 | 10.7 | 6.9 | 16.7 | 1511 |
| 8/12/1999 | 11.3 | 6.8 | 16.6 | 1596 |
| 9/12/1999 | 11.0 | 10.3 | 16.5 | 1553 |
| 10/12/1999 | 9.9 | 10.6 | 13.5 | 1398 |
| 13/12/1999 | 10.3 | 5.3 | 14.4 | 1454 |
| 14/12/1999 | 11.0 | 10.6 | 16.3 | 1553 |
| 15/12/1999 | 11.6 | 7.4 | 18.9 | 1638 |
| 16/12/1999 | 10.4 | 7.9 | 16.6 | 1468 |
| 17/12/1999 | 10.1 | 10.5 | 13.7 | 1426 |
| 20/12/1999 | 12.8 | 9.7 | 19.9 | 1807 |
| 21/12/1999 | ||||
| 22/12/1999 | ||||
| 23/12/1999 | ||||
| 24/12/1999 | ||||
| 27/12/1999 | ||||
| 28/12/1999 | 13.1 | 7.7 | 19.6 | 1850 |
| 29/12/1999 | 12.4 | 8.0 | 16.7 | 1751 |
| 30/12/1999 | 14.9 | 15.5 | 18.5 | 2104 |
Normale uitzendingen op zaterdag
| Datum | Kdh 6+ | Kdh 6-12 | Kdh BDS2049 | Kijkers * 1000 |
| 6/11/1999 | 8.6 | 9.1 | 10.6 | 1214 |
| 13/11/1999 | 6.4 | 5.3 | 9.3 | 904 |
| 20/11/1999 | 7.8 | 3.5 | 11.3 | 1101 |
| 27/11/1999 | 7.1 | 5.5 | 9.8 | 1003 |
| 4/12/1999 | 5.0 | 2.7 | 7.5 | 706 |
| 11/12/1999 | 5.6 | 2.4 | 7.4 | 791 |
| 18/12/1999 | ||||
| 25/12/1999 | 7.3 | 3.1 | 6.3 | 1031 |
Weekcompilaties op zondag
| Datum | Kdh 6+ | Kdh 6-12 | Kdh BDS2049 | Kijkers * 1000 |
| 19/9/1999 | 6.1 | 1.6 | 8.9 | 861 |
| 26/9/1999 | 6.2 | 3.1 | 8.2 | 875 |
| 3/10/1999 | 6.4 | 4.6 | 8.3 | 904 |
| 10/10/1999 | 7.0 | 4.2 | 8.6 | 988 |
| 17/10/1999 | 6.7 | 1.8 | 8.2 | 946 |
| 24/10/1999 | 7.9 | 3.3 | 10.3 | 1115 |
| 31/10/1999 | 10.8 | 7.0 | 14.3 | 1525 |
| 7/11/1999 | 8.1 | 4.7 | 10.9 | 1144 |
| 14/11/1999 | 8.4 | 8.1 | 10.8 | 1186 |
| 21/11/1999 | 9.0 | 7.2 | 11.6 | 1271 |
| 28/11/1999 | 9.0 | 7.2 | 11.6 | 1271 |
| 5/12/1999 | 6.1 | 3.7 | 8.0 | 861 |
| 12/12/1999 | 8.2 | 4.5 | 9.8 | 1158 |
| 19/12/1999 | ||||
| 26/12/1999 | 5.3 | 3.5 | 5.5 | 748 |
Extra uitzendingen
| Datum | Kdh 6+ | Kdh 6-12 | Kdh BDS2049 | Kijkers * 1000 |
| 19/9/1999 | 3.5 | 1.2 | 4.5 | 494 |
| 1/11/1999 | 11.4 | 7.8 | 15.7 | 1610 |