You know when I wrote 'anyone else get it' in that thread, I meant did anyone get the game... not to worry. No, I never tried Metal Gear Solid Touch at all. I haven't heard great things but I guess you never really know without giving it a go. There may be a Lite version to try.
Here are some off the top of my head. I'll have a look on my iTunes later to remind myself what else I have tried.
These are in no particular order but if you want my must-haves, I'd say Space Invaders Infinity Gene (mentioned above), Flight Control and Rolando 2.
Resident Evil Degeneration - Not great. RE in an airport. I found the controls very awkward and, while the basic game wasn't bad, I got the impression it wasn't great even if it had decent controls.
Duke Nukem - Absolutely unplayable due to the controls.
Canabalt - This is available free as a Flash game so you can try it. The purchased Touch game is the exact same and I adore this. It's a run and jump game (well, just jump, run is automatic). Jump across buildings, over obstacles, through windows. Style is sublime.
Beneath A Steel Sky Remastered - Another one you can get free on a PC but, for me, worth paying for. A great point and click adventure from the makers of Broken Sword.
Monkey Island - Another point and click (of course). This is the new redone version and you can just swipe the screen to play it in its classic form. I'm actually reluctant to recommend this simply because it could have had all the nice animated visuals of the larger console versions and it doesn't. Still, it's a great game.
Real Racing - The most console-like game I've seen on the Touch. It's beautifully made and controls surprisingly well but I'm not sure that this type of game really suits the device. If you're looking for a racing game, though, this is a good one.
Katamari - Barely playable on a 1G Touch and yet becomes quite an enjoyable experience on the 3G Touch. But whether it has anything to offer over other versions? Well, it doesn't. But it's not bad.
Lumines - Such a great game but the controls here are very poor and, for a game like that, it's a total deal-breaker. Hold off until they fix the controls (or if they fix them).
Doom Resurrection - It's an on-rails shooter based on Doom3. Once you get past the fact that it's on-rails, you may really enjoy this. It's a great little shooter. House of the Dead meets Doom.
Rolando 2 - I totally recommend this. Many games on the App Store are complete rip-offs of other games and it's so clear that Rolando began life as a Loco Roco rip-off. And yet they actually added a huge amount to the game and the first Rolando turned out more fun to play than the game it ripped-off. The sequel is even better and manages to get more of its own identity in the process. A wonderful game. A great Mr.Scruff sountrack too.
Flight Control - A brilliant 99c game. It's so simple. You just draw flight paths for planes and try not to get them to crash. And then it gets hectic as more aircraft come in to land. It's so much fun.
SimCity - A surprisingly good version of SimCity. More detailed and better than the DS versions. Control works but takes a long time to get used to and, even after that, it's slow to play. Not much of a quick dip game so hard to say that it suits the Touch but it's worth a mention as it's well done.
Darkest Fear - A very short horror game with a simple concept - monsters lurk in the shadows, light your way to safety. It's a little puzzle game and took me by surprise. I absolutely loved it.
There are a few for you to start thinking about. Some there might catch your interest. You probably know this but www.toucharcade.com is a great resource for Touch gaming so you can search for info on any of those there. Hope that helps!