I have some more obscure games to add to the list:
1.Avenging Spirit
2.Battle Unit Zeoth
3.Knight's Quest
By a strange quirk, that list is simultaneously arranged in alphabetical order, likelihood of being TASed and my preference for them to be TASed. Anyway, some info:
Avenging Spirit:
A short but difficult action platformer where the protagonist is a ghost who has the ability and need to possess any enemy it comes across. Each enemy has different attack and movement capabilities as well as hitpoints, so a TASer has plenty of choices.
You have two life meters, the life of the possesed enemy, as well as your "spiritual power." If your host runs out of health or if you press select, you ditch them and become a free floating apparition again.
While in this state, you can pass through walls and enemies can do nothing to you, in fact they don't even notice you. However, you constantly lose "spiritual power," lose it all and its game over (infinite continues though). Some enemies do have the ability to damage your "spiritual power" directly when you have a host, so be mindful of that.
I don't know if death can be used to save time, but if you die, you come back in whatever host you had last, this can be useful for keeping a host in a level where it doesn't show up.
Interesting/useful hosts:
Blonde Karate Girl - One of the three host you are offered in the beginning
tutorial. Take her! She is fast and has a good jump and a bit of range for her attack. The best choice for the first areas.
Buzzcut guy with pistol - He has one of the highest jumps, and full screen range, otherwise not so great.
Robot - Not so quick, and not a great jump vertically, but this guy "floats" (a slower descent useful for getting across longer gaps) . Plus his missiles are long range and powerful.
Yogi - His movement sucks, and his attack is no range(punch) and weak, but, he can "fly" (through his meditationary powers, you can jump while in the air, infinite times). Also, I believe his horizontal movement is faster while flying (perhaps a TASer might be able to get some nice speed similar to the underwater parts of the Wonderboy 5 TAS).
Shuriken Ninja - Fast, nice jump, long range attack and Ninja.
Invisible Man - You can't attack but enemies can't attack you, his hitpoints constantly run out, basically a nice way to avoid damage, but you have to plan for your next host. If you somehow got up to a boss with this guy, you'd be totally screwed.
Laser Girl - Not an enemy, but instead the person you are trying to save. Getting her means you are on your way to the "good" ending (Bad ending means not saving her). She moves and looks like Karate Girl, but her Laser is long range and (I think,) the most powerful weapon in the game. Getting her involves a bit of extra legwork, but not much I think. I recommend a TASer grab her.
Yikes, that was longer than I thought. I'll post the info about the other games later I guess.