Flood! reminds me of my own level, Escaping the Giant Wave, although it is less forgiving and less shaky. I am enjoying it, though I have not beaten it yet.
Telefun, aside from having slightly fewer checkpoints than I'd like, is a pretty fun level. The challenges make good use of the teleporter abilities, though I could never quite figure out how to do the last section as it was intended. I beat the level just by finding a pair of teleporters where the exit was higher than the entrance and using the difference to build up speed and launch myself to the finish.