I think on WoW I have 96 days played across all my toons, tho I'm not 100% sure. Ive also been playing C.S 1.6 for over 10 years, so a lot of hours in there. Currently replaying Baldur's Gate I again, and with the BGTMOD, it's going to be seamless with Tals of the SwordCoast, BGII and Throne of Bhall. So again a lot of hours.
And thats not counting the various others. Pokemon, Final Fantasies 10 and 13, Tales of Symphonia, Last Remnant, Lost Odessey, Blue Dragon, Chrono Trigger, DragonQuest, Zelda (Twilight and WindWaker,) Super Smash Brothers Melee (1600+hours, again cant confirm, dont know where the memory card is). Add to that the master system/megadrive games, old pc shareware games, and you have a huge amount of hours. Its hard to think what Ive done with my life that wasn't playing some game or another.
To make it easy, we're talking 19 years of gaming.