I have thrown many wasted hours of my life into the following games:
Final Fantasy VII, VIII, IX, X, X-2, XII, Tactics Advance, Tactics A-2 Grimoire of the Rift
The Elder Scrolls IV Oblivion
The Elder Scrolls V Skyrim
Gran Turismo 4
Kingdom Hearts I and II
Call of Duty Black Ops
The games listed above are the games that I have thrown the MOST amount of time into playing throughout my life. Damn I geek.