I've picked up Diddy Kong seriously, and this is the 4th day I've been playing as him. Here are some videos of me. Note: All of these are on wi-fi. I don't have any offline videos yet. Some players (Sheik player named Billy or a Ganondorf player named F3nix) have videos of me offline at a smashfest, and I think I was doing pretty well.
Anyways
http://www.youtube.com/watch?v=walZsLZJIFg&feature=channel_page-Day 1
http://www.youtube.com/watch?v=g4dug9MTWfM&feature=channel_page-Day 2
http://www.youtube.com/watch?v=y03TduYo7xA
http://www.youtube.com/watch?v=G4Rfx_O_-7U
NEW-
http://www.youtube.com/watch?v=XWlyWoQth94&feature=related vs TL
http://www.youtube.com/watch?v=NIKjMCFifWw vs Marth 1
http://www.youtube.com/watch?v=oblpM0hVdGc vs Marth 2
http://www.youtube.com/watch?v=jmZMWvij3qY&feature=channel vs Marth 3
Anyways
http://www.youtube.com/watch?v=walZsLZJIFg&feature=channel_page-Day 1
http://www.youtube.com/watch?v=g4dug9MTWfM&feature=channel_page-Day 2
http://www.youtube.com/watch?v=y03TduYo7xA
http://www.youtube.com/watch?v=G4Rfx_O_-7U
NEW-
http://www.youtube.com/watch?v=XWlyWoQth94&feature=related vs TL
http://www.youtube.com/watch?v=NIKjMCFifWw vs Marth 1
http://www.youtube.com/watch?v=oblpM0hVdGc vs Marth 2
http://www.youtube.com/watch?v=jmZMWvij3qY&feature=channel vs Marth 3