The first ones that come to mind would be the final fantasies: FFVII, FFVIII, FFX. I think my times were over 100 hours or something because I was always obsessed with doing absolutely everything (then again I do have a habit of leaving my console on pause when I go shopping, to eat etc)
Plus probably Baldur's gate (I, Tales of the sword coast, II and Throne of Bhaal), Oblivion, Dragon age: origins.
Strangely enough the only other ones I could think of would be games I played ages ago when my parents would buy me only one every half year or something (martian alert, pokemon, mario kart, Super mario etc) and games that really shouldn't have sapped that much time because they were played mainly casually: ie. worms armageddon and the timesplitters trilogy, which I spent ages just playing arcade mode and doing the challenges on.