The word that springs to my mind is not 'nice' but 'cute'
However, for the sake of our young (and perhaps female) readers, I hope this thread doesn't encourage Sachankara to push the envelope too far. His avatars over the past year have been borderline enough. Try explaining that pic to a 10-year old girl in gradeschool.
And Garf's avatar isn't cute?
Pio, is your avatar a bubble-bobble?
Who is the man in your avatar, Garf? I always wondered.
Rjamorim's one is among my favorites (the faces changing). I like Cygnus X1's too (the hand playing a record with a glove).
Cygnus' one is Wish You Were Here's back cover.