The C64 version of Bubble bobble is great.
I'd also suggest Impossamole starring Monty mole (same series as monty on the run). I don't know why it gets so much criticism. It's a nice little game.
And I can't believe noone has mentioned impossible mission.
Dinky doo is a good game which doesn't need more buttons pressed at the same time either (in case your phone doesn't support it).