Parappa the Rapper

OR

Syphon Filter

Psi-Ops

Shaq fu all the way.
Friday the 13th. I love that game beyond anything else. If they could update it but keep the soundtrack i would gladly give them my left testicle.
Bust a groove.
They just did phantasy star online 2. I would have said that.
Killer instinct is up there.
Bushido blade. I used to be obsessed.

Oh man, I still remember getting all the way to the top of the tower in the first Bushido Blade and finally killing the guy with the gun. That was just awesome. I'd love to see a sequel to that series!
Killer Instinct is WAY up there for me too. I'm still holding this completely irrational hope that NRS will somehow manage to purchase the rights away from Rare (since they're clearly not using them) and completely revamp this series. That would be epic.

Syphon Filter was awesome back in the PSone days. Even the PSP games were great, which makes it all the more surprising that Sony hasn't made this in to one of their bigger brands on consoles.
It sounds stupid, but the sheer "holy crap" moment that I got the first time I tazed someone in the first game was just awesome!

I actually never played this game, but I always wanted to. Do you think that that the original is still fun all these years later?

-Clock Tower
-Lost Kingdoms
-Deception
-Banjo-Kazooie
-Quake (Carmack has mentioned they've been discussing a sequel to Quake 1 for a few years)
Edit: -Jet Set Radio

Why I picked the games:

Earthbound: This series has been on/off dead. Last game came out 6 years ago and only 1 game in the series made it in the U.S The others was Mother(Eartbound Zero by most fans) was originally supposed to come out in the U.S but the NES days were almost over so that was scrapped. And Mother 3 was released in Japan in 2006. Many fans demanded it should be released in the U.S but Brownie Brown said that it would be possible to make it for the DS but we haven't had word on the matter. One of the best RPG's of all time yet underrated.

Crash: One of my favorite series ever and the latest games were meh'ish and the series needs a proper reboot or return to its old roots

Mother fucking ROAD RASH mother fuckers!

Eternal darkness would be great... and nightmare creatures 3 would be awesome...

3 I can of off the top of my head would have to be

Bust A Groove
Killer Instinct
Power Stone

I need some Kitty N back in my life.

Turok. C'mon, Turok is awesome.

Crash 3: Warped would easily be in my top ten, if not top 5 of favorite PSone games. AWESOME choice!

975% this. I loved road rash.
And has there been another duck hunt? I know there are imitations.

I forgot to mention Heavenly Sword. Great game, just came out at an awkward time.

Guitar Hero. But only for Alt., Speed, and Older Metal and such. And 80's Rock, Metal and Rock, my favorite types of music. I can't help but love the series.

Shinobi. That game was awesome on the ps2 and Id love to see a ps3/360 version of it. Hotsuma was a badass.

Conker's Bad Fur Day.
Roadkill.
And as Killswitch said, Turok.

Bloody Roar.

You know, I'll pop it in and check it out. I was way into the story when it came out, but the game truly did hold some "oh shit" moments.

Brain drain popped people's heads open when you used it to the max and flinging people around like rolls of toilet paper never got old for me.

Possession/enemy suicide. Clapping folks while their in a telekinetic hold. Fires with your brain that continued to burn.

The team at Midway certainly went all out for that game.

Why are people listing multiple games when the thread title says "one"?

I'll join in.

Condemned
Killer Instinct
Capcom vs SNK
Def Jam fighting series
Mischief Makers
Tobal
Tao Feng (not because it was particularly good, but it could be improved)
Bayonetta

Killer Instinct.
That would definately be my one choice if I had the power to revive a game. I would love to see what they could do with it with todays technology and fighting game knowledge.

Jet Force Gemini, and Skies of Arcadia are my first choices!