how to burst effect

I have seen similar templates and graphics to this:

http://www.4templates.com/index.php?_p=vp&i=xeno6bl

In the top left corner is a bursted rotational blur of something. No idea what it really is, but I need to reproduce it.

I just want to create that part (in the top left corner).

Any ideas or places to start?

Thanks!

Wrong forum. This goes in the photoshop help forum.

there are a lot of starburst tutorials floating around the internet.

I know http://phong.com has one for sure.

supahsekzy: thanks!
telemakhos: sorry.

The description for the forum said "Just starting out? Want some help"

I'm new :( thanks for the help all.