I added the ability to embed YouTube video. Grab your video id, it'll be in the address bar, looks like junk similar to this: HM1ADVa9Uj0

Put some [youtube] tags around it and post. I'm hoping this will make it easy for people to post video tutorials, but clips of bears spinning sticks is also cool. Example below:

[youtube] HM1ADVa9Uj0[/youtube]

(a space is added so it doesn't get converted into a video)

Farted around with the code again, it's optimized for 1680x1050 720p now. You can raise or lower the resolution, but the video will show up largest if you maintain the 1680x1050 aspect ratio.