I'm playing through my third round at Fallout 3 now. It's so enjoyable. I'm one of those that really enjoyed it but I know it's mostly down to me not being able to compare it to many other RPGs as it was my first. I've read all the criticism it gets but really that doesn't bother me. I kind of compare it ti my experience of others playing GTA IV. I really got immersed in the whole game. I laughed and got spooked, made some crazy decisions, chatted to some whacky characters, learned some local history, blown the heads of some mutants and discovered and explored some creepy areas. Love the game.
Most gamers, I know in real life, thought it was an amazing game despite was some people will tell you.