Well, as far as true board games, it's Risk and Monopoly. Also had one called the Sinking of the Titanic game that we played a lot. And Life. I don't remember it being a game, but I loved Light Bright!
Role Playing Games such as Dungeons and Dragons, or Advanced Dungeons and Dragons? Yeah, I started around 1980 with a basic box set and Keep on the Borderlands module. Within a year I had several modules and source books, many hardbacks. I went on to 2nd Edition, and even what is known as version 2.5. I have an extensive collection of these products. As in two huge bookshelves and some spill over! Kinda like my flashlight collection will probably be.
I've never taken more heat/scorn over anything else in my life! I've been called a geek (might be true), a devil worshipper, and worse. I've never dressed up in costume to act it out (no SCA, either) or used actual words or components for spells (no mumbling what incantations my characters would say). I guess I'll see how polite CPF really is after revealing this!
Played Boot Hill, Gamma World, and Top Secret a few times. Played Star Frontiers many times, and have a decent collection of that too, though it's nowhere near as numerous as AD&D due to the fact that it wasn't as popular.
Tried Werewolf and a few other like games too, never really got into it. Even though I'm a Trekkie, never played the Star Trek RPG. Never played Middle Earth, but thought it was a good system. Used some products by the same company (I think it was the same company) that were made for AD&D. Before TSR (They Sued Regularly) put them out of existence. I've played the Star Wars RPG (D20 System) by WOTC, now Hasbro I think. Same system as 3rd Edtion AD&D, but just couldn't bring myself to buy all new hardbacks and the like. Plus, I'm not impressed in my limited play with it.
I still would enjoy RPG, if I had the time. And, as players aged and had families, it's dwindled for all of us. Did get asked to DM a couple of months ago, said no. I want to play, not referee. And I've DMed much more than played.
Okay, after writing this I realize I must be a geek/dweeb.
But, I'm not wacked as some media reports and extremists would have you believe. I do have this thing for flashlights though...