I have been listening to some cool mixes by DJ Sick Puppy over the last few days. I like his stuff which is trance-like but with a fair mix of bouncy house and vocals. Its certainly more bouncy than the baleric Ibiza style stuff I usually listen to when I'm trying and into the code "zone". He makes good use of samples and generally keeps the music high tempo without falling into the hard-core dance territory. He's got 3 of his albums and a radio feed on his website. There are some other mixes floating around on the file-shareing networks. So far its all been "Good Stuff"tm.