Just from this year:
31/1/11 - MEM beat ORL in a revenge spot and covered
29/1/11 - ATL lost to DAL in a revenge spot
24/1/11 - NOR beat OKC in a revenge spot
21/1/11 - SAN beat NY in a revenge spot and covered
18/1/11 - CHI lost to CHA by 1 in a revenge spot
14/1/11 - GOL beat LAC in a revenge spot and covered
12/1/11 - DET lost to MEM in a revenge spot
08/1/11 - CHA beat WAS in a revenge spot and covered
07/1/11 - PHI beat CHI in a revenge spot and covered
15/12/10 - LAL beat IND in a revenge spot and covered
14/12/10 - MIN beat GSW in a revenge spot and covered
8/12/10 - IND lost to MIL in a revenge spot but covered
4/12/10 - PHI beat CHA in a revenge spot and covered
30/11/10 - BOS beat the shit out of CLE in a revenge spot and covered
24/11/10 - ORL beat MIA in a revenge spot and covered
Not a large sample size, (nor do I claim to have picked up every single possible revenge game). But these were the main revenge spots I saw this year and they have gone 11-4 SU and 11-4 ATS. Not too shabby if you played them.