I have a tonne (!) of games that I have yet to play. You want me to limit my answer to PCE games only? OK, I will:
1. Strider (ACD): I want to play this game, but I have to finish cleaning / organizing the basement first. I have cheated, though, and listened to the red book soundtrack a few times. I am especially curious about this game since I still really like Strider (if you think Strider has aged poorly, well, it's your loss
).
2. Kiadian 00 (CD): I have to finish painting / installing base moulding first. I was going to get this from wolfgames, but someone beat me to it. Fast forward 3-4 years, and I finally got it. I am really looking forward to it.
3. Wallaby! (HuCard): It's sealed (original seal, with a rip cord, too, I think!): I got this
ages ago... I'm saving it for a party with my friends. Unfortunately, I have to wait for one of them to visit NJ... when he does, though, it's gonna be a blast! I predict that folks will be fighting to be "one of the five" who play this badass game for the first time. I've never played it via emulation.
4. St. Dragon (HuCard): I actually played this via emulation for a few minutes because I couldn't find the damn AC adapter(s) for my PCE consoles. I want to play this game properly, so I'm holding off until I find the AC adapters. I'm sure hardcore shooter fans think this game is goofy, but I actually like it! I don't know what that says about me.
There are many more, but I'll stop...