I've always had a few demo discs around. For example, that's the only way I could play Intelligent Qube for years. (Cue people asking me for an Intelligent Qube ISO...) And my wife nearly killed me when I played the Parappa the Rapper demo for ages. I also picked up the Official PlayStation Magazine demo of Tomb Raider: Legend within the past couple of years.
But now they've gone beyond utility into that bizarre realm of "neat artifacts I'd like to buy just to own". Oh boy. This is like label variations of Atari 2600 games all over again.
Here's the best source of data I've found on them. I even made a spreadsheet of the PS2 demos so I could keep track of mine. I have 13 ... out of over 400 listed on this page. At least I'll have something to keep me busy. I also have 3 PS1 demo discs and a handful of PSP demo UMDs.
Incidentally, there is competition out there for these. On a lark, I bid $18 on a lot of 41 demo discs the other day on eBay. The final bid was $38 or so. Yow.
Anyway, if you've got some you'd like to ditch, give me a holler.
Yet another way to feed the beast. Appeals a bit to the nostalgic, f/Free [after a fashion], and obsolete sides of ya', I guess.
You've got an awful lot of fanzine back issues to go through, I think. Might be worth splitting that into a separate category?
Also meant to add that I'm glad you found the outlier collector to normalize your self-perception. I keep telling myself, "I don't play *much* WoW... Look at these crazy raid-folk!"
Yeah, obsolete and actually difficult to find. The GameStops near me have a few random ones in stock, but they're only the official Sony ones. I am going to hit up the flea market this weekend and see if i can scare up a few of the non-Sony ones (i.e. individual game demos).
I have two of the fanzine demos actually, one from the PS1 era and one from the PS2 era. I'm not so keen to have those, but they are still interesting.
I think I remembered a couple more demos I have that I didn't put on this list. There's the Metal Gear Solid 2 demo that came with Zone of the Enders and a Devil May Cry demo that came with my Resident Evil Code Veronica X.
Still a long way to go, but now I have something to start storing on the shelves where the Atari 2600 games used to be.