(Mimi dances around with her hands waving in the air, making fun of Drew)
Mimi: Oh, oh, well, I'm going to stay with Baryshnikov, to be a prima ballerina...
Drew: Didn't I see you in Fantasia?
Mikhail Baryshnikov is an Americanized Soviet ballet dancer and choreographer, often considered one of the best ballet dancers of the 20th century.
Fantasia is the third of Disney's earliest animated feature films, which, while now considered a classic, was a commercial disappointment in its time. It consisted of a series of animated shorts with no dialogue, based around classical music pieces, the most famous of which starred Mickey Mouse, titled The Sorcerer's Apprentice. The reference itself is specifically to the segment based on La Gioconda - Dance of the Hours, in which tutu'd hippos and elephants dance ballet, along with alligators and ostriches.