PatrickXD said:
Umm... I've been gaming since I could read so I don't really notice any positive (or, indeed, negative) affects on my personality. It's just part of who I am.
Apart from this, of course,
There are plenty of games that have just made me think about things. Especially games like Mass Effect, Bioshock, Metal Gear Solid and GTA4 (notably that I can think of right now.) Just the things that happen inside them make me wonder about what's going on inside them. You know, opening up ideas in philosophy and such.
Otherwise, AoE and AoM taught me a bunch about History and Ancient Mythology with the little information book that they have for every technology and unit.
Sim City actually introduced me and got my interest into urban issues and urban planning.
Alpha Centauri got me almost totally immersed in philosophy, existentialism, and thoughts towards the future, which is like 50% of what defines me right now (okay, maybe a bit less than that.)
And games in general have given me a sense of wonder about the world that I don't think movies ever could. If I grew up without games, I'd definitely be a much, much different person than I am now. And that person would most probably be much less interesting, much less thoughtful, and generally worse than who I am now.