I've been lurking for a little while, and I've decided to join this board.
Prior to August of this year, I had zero interest in GTA. I'm mainly a survival horror person, as most of my favorite games are horror. Silent Hill, Resident Evil, Dead Space, Condemned, etc.
When GTA V came out, I took a gamble and bought it, and I'm so glad I did, because I absolutely love it. A few days later, I got a hold of IV with the BOGT and LATD add ons, so I've been playing that. I beat BOGT and I'm quite close to beating the main campeign of IV, though I'm having kind of a tough time with LATD.
A few days ago, I bought III, Vice City and San Andreas on ebay, and I should be getting them sometime next week.
I never thought I'd say this, but GTA is actually threatening to replace Silent Hill as my #1 favorite game series, and I haven't even played all the games yet.