Baladur's Gate 1&2 better be on there, as well as Shining Force 1&2!
Top 10 will probably look like (in no particular order)
Skyrim
FF VII
Mass Effect 2
Baldur's Gate 2
LoZ: Ocarina of Time
Chrono Trigger
Some Pokemon game
Diablo 2
FF III
Fallout 3
Unless of course they aren't including PC games.