I especially love Snoop's and Cee Lo's. While Cee Lo's may not look like a particularly ugly sweater to some people, let me remind you of what he usually wears:
The Christmas sweater is a stretch for him, you guys.
And here is a sample of something I would absolutely wear:
It's to the point. What can I say.
Finally, let me leave you with this gem:
[all images via google image]
Justin the Gingerbread. Never gets old.