Very few cases because i give the games a fair chance the first time i play them, so trying for the 2nd time will 90% of the time end up with the same result.
With that said, back in 2008 I played Fallout 3 and i didnt like the game, i dropped it after few hours. In 2010 before New Vegas i went back to try the game again and suddenly it clicked and i had a great time with it.
Another one is Dragon Age.