I have a few that I use.
http://www.tmpgenc.net/e_main.html
If you want to pick and choose the areas TMPG is great.
VCD cutter
http://www.seller-club.com/~vcdcut/
VCD cutter has a nice feature for MPEGS if you have a 10 minute vid, set it to cut 60 parts and you have nice 10 second clips :-)