Most memorable encounter: Not sure which is most memorable.
Favorite RPG website/ blog: Dysons Dodecahedron and a whole bunch of others
Rarest RPG owned: Unusual, but in the day of pdf's it is hard to say any are specifically rare.
Favorite RPG playing celebrity: Not that I know many. I really like watching Acquisitions Incorporated, and Tabletop, and Titansgrave.
Favorite RPG of all time: It is a toss up between Dungeons and Dragons and Star Wars D6 by West End Games