Of all the sesame street characters, I've always loved cookie monster, mr. snuffy, and bert. I've never really enjoyed all the other characters. Also, i've had a fascination about Oscar the grouch, although i find his habits a lot disturbing.
Thanks too yahoo.com for the clip that gave me a lot of enjoyment. I urge you to view it here
http://www.npr.org/blogs/incharacter/2008/02/cookie_monster_comes_to_npr.html