OK! Now ALL Moodle user avatar icons AND activity icons can wiggle too!
How you can make it happen on your Moodle 1.9.15+ site as well:
http://moodurian.blogspot.com/2011/12/wiggly-icons-on-your-moodle-site-to.html
(warning! Not tested on Moodle 2.x environment!)
and
ENJOY it from this Sunday Christmas morning and onwards!
Frankie Kam
Melaka, Malaysia