Thanks everyone for the replies!
Drex, I agree with you about the first one, I really just wanted to post it up because of the way I took it - I blocked the left hand side of the flash with my hand, so all the light went to the flower and left everything else black. Just screwing around really, was fun!
You're right, the second one is a bit dark (I'll stay out of the "underexposed" and "compressed" discussion and just say that). Thanks for the edit Traveler, I'll see if I can duplicate that!
The third one was another screwing around shot - I stuck the camera out of the car window while driving downtown, I think I had a 2.5 second shutter speed. The big orange squiggly was a car parallel parking. Fun stuff!