The Bat Blog has a great pic of an Etch-A-Sketch drawing of Heath Ledger as The Joker done by the The Etch-A-Sketchist. The Etch-A-Sketchist is an internet sensation who has been featured in real art galleries for his work.
Check out The Bat Blog for the whole picture, and be sure to check out The Etch-A-Sketchist’s blog for more.
I meant to write about this a month ago when I found it, but it got lost in a sea of Google Bookmarks.
RopeofSilicon has a collection of movie-themed avatars for you to download and use. My personal favorite is the NPH one from the poster for Harold and Kumar 2.
They also have ones with Heath Ledger as The Joker, Cloverfield, Star Trek, Sex and the City, and a ton more. Go get yours at RopeofSilicon.com.