You can try one of these, they are Free.
+ http://www.alldj.com/video_editor/video_editor.htm.. look at the right side of this site, those links also provide more programs
these are expensive, but you might interesting :)
Here's Adobe Premier pro CS4 it's about $800, I think it is one of the best video editors.
Or you can try final cut pro, if you wanna buy it, it's about $1,299
Or Final Cut Express 4, it's about $199
Or iLife ’09, it's about $169
Or Avid Media Composer
Or Avid Symphony Nitris
Or Avid Xpress Pro