Given Unlimited Time, I'd play/GM...

[Wombat]

First up, I'd love a second chance at two Star Trek campaigns that died before they even started. The first was a crossover game where the Starfleet folks meet the humans from Fading Suns -- I think this would be a really interesting study in cultural dynamics. The other would have been my just-post-Star Trek VI game, essentially the stand down from "The Klingons are our enemies" but before "The Klingons are our allies".

Another one I would love, love, love to run would be Nobilis -- I have several ideas for this, but I am waiting until I find the right group.

Other than that, oh, let's see ... Agone, Mechanical Dreams, bring back RuneQuest, maybe Blue Planet, and about two dozen other systems and settings that I have yet to explore, or at least explore completely

 

[howandwhy99]

Not counting what I'm doing?

....a horribly maddening and deadly Call of Cthulhu game. I'd play preferably, but I have no problem with bringing the hammer down.

 

[JoeBlank]

Games/campaign settings which I would like to play but doubt I will ever get to:

Grim Tales
Slavelords of Cydonia
True20 (maybe even Blue Rose)
Midnight
Oathbound (I keep getting close, but not quite there)

 

[Henry]

Given unlimited time? Everything I darned well own!

If I had to prioritize, though,

Grim Tales
Black Company
Spycraft
Eberron
Forgotten Realms
followed by a few one-shots of Feng Shui, Skull and Bones, and Sidewinder d20.

 

[Ankh-Morpork Guard]

Unlimited time? Hah, that's easy.

I'd run everything.

Even the bad things, just to torture PCs between the rest of the systems.

 

[nakia]

I would run this wild-west meets Arabian knights meets Stephen King campaign I've had on my mind for years now, using modified Grim Tales rules.

Although, right now, I'd settle for anything. I'm going through withdrawl.

 

[sniffles]

I have a long wish list.

Eberron
Lord of the Rings
Oriental Adventures (but not in the Rokugan setting)
Fantasy Hero
Star Wars
GURPS Technomancer
GURPS/D&D Steampunk
A Champions campaign in which the heroes have complimentary powers and a geniune desire to work together (unlike our current campaign, in which the heroes are just there so the players can play).
A revival of our defunct Stargate game
A revival of our defunct homebrew urban D&D campaign
My D&D wuxia campaign that's currently under construction, but with someone else running it because I'm a crappy GM.

 

[scourger]

Well, I've pondered a list of games I would actually like to run. Here are the ones that I have started and need to finish in my current order of preference.

1. Tour of Darkness.
2. Judge Dredd.
3. The Shackled City (needs further refining, so it's unlikely).
4. Greyhawk (a core 3.0 game--needs serious work to resume--even more unlikely).

Here are games I would like to run that I haven't started.

1. A Savaged Conan Triumphant.
2. Age of Worms as an Omega World game.
3. Ancient Kingdoms Mesopotamia.
4. DragonStar Raw Recruits as a Star Trek d20 game (probably won't happen).
5. ORK! of the Rings (this one will never happen).

There are some that I don't own.

1. Evernight.
2. Serenity (I need to see the movie and the TV series on DVD 1st).
3. Paranoia (I'll probably have to settle for the card game).

There are even a few that heven't been published yet.

1. Deadlands (for Savage Worlds).
2. Necropolis (also for Savage Worlds).
3. The Horned God Complete Campaign (I doubt I'll ever even see it published).

As far as playing, here is my list of games I would like to finish.

1. Star Wars all-jedi Tempest Feud game.
2. Omega World conversion of Gamma World Legion of Gold.
3. Hell on Earth (another one I'll probably never see).

There are others, but they don't make the cut.

 

[Starman]

One of my dream games has been an epic Dark Ages (White Wolf) game. I would have five separate groups playing each of the five games (Vampire, Werewolf, Mage, Inquisitor, Fae) and each group would slowly realize that Armageddon was imminent. Eventually, all five groups would have to come together, overcome their differences, and try to prevent the apocalypse or just avert as much of the disaster as they can.

It's huge and crazy and I really doubt it will ever happen, but I can dream.

 

[Mercule]

Aria -- revisit the plan to streamline the system a bit, and them run with it. Hero 5th is a possible alternative, too. Either way, it'd be a way to implement my homebrew better.

Shadowrun. I miss playing this game. Problem here is players, not time, though.

New WoD. Looks awesome, but I've only got time for one game.

Paranoia. Because it's fun.