The lazy man's guide to animated squad logos:
1. connect to Internet, bring up browser
2. Look for theme of squad (i.e. "explosion" "fighter" "hot raging mammas"
3. Spend all of 15 minutes looking at various fanpages, nerds' personal sites, etc. for GIF or QuickTime movie
4. Steal. If necessary, touch up (add squad #, etc.)
5. convert to .ani
Takes a little longer than making your own, but hey... if ya don't wanna make something, the internet is where you go. This has so far worked in about 2 cases for me, and I only rarely use other peoples' stuff because it is invariably not as good as mine.