Um...
Err...
Hmmm...
Naa...
Dur...
Erm...
Mmmm...
Ummn...
Ahhh...
No.
I'm not very good at this 'not thinking' lark, I've played so many games in the 27 years I've been gaming that is difficult to name my 10 favourite without thinking, although Mount and Blade: Warband and Saints Row 2 would be in my top 10, and possibly Pirates! and Forza 3 or one of the Gran Turismo games... perhaps Moonstone: A Hard Day's Knight too, but the problem with nostalgia and old games is that it's hard to tell whether they were really as good as your remember them, or if it's just because you were younger and they were the best the technology could do at the time.
Recently I fired up an Amiga emulator and realised that my recollection of my old games has always kept up (roughly) with the current levels of graphics and screen resolution, it's like my brain up-scales and enhances my memories to contemporary graphics quality.
I can't do it without thinking, there's too many games to remember and factors to consider, in fact by the time I'd written Mount and Blade and Saints Row 2 I'd already thought about the subject too much to be eligible.