No way anybody played more hours straight than me! hehehehe :P
There 2 or 3 games that really possessed my mind, my body and my sit in front of my pc :P
1. Divine Divinity
2. Betrayal at Krondor
3. Kotor
4. Neverwinter Nights
There were cases that I played for about 40 hours straight!!!!! no food no drink (well maybe i had something while i was playing but ok :P) and of course no sleep! i only left the computer sit for the toilet sit LOL :P
That means i can become obsessed, especially when i feel that i am nearly completing a game
Fortunately i am still alive hehehehehhee :P :w00t:
as for the sum of hours played hehehehe well i never counted them, i am playing video games since 6 years old ( may that be amstrad games or pocket tetris :P) and now i am almost 25, you do the maths hehehehe :P
I already played countless games, yet there countless games i haven't played, but the majority of the big hits i did

So if i were to calculate the amount of money that would cost me if i bought the original copies every time.......well i think only Mr. Bill Gates could afford it :P