Rufus because my diaphragm gets a workout while trying to utilize the 18 vocal sounds a mole makes. Chuckie because [...] he's an asthmatic with five personalities rolled into one—plus I have to do the voice the way [Christine Cavanaugh] did it for 10 years.

Quoted in Knutzen, Eirik ((2002-08-18)). "Voice behind Bart Simpson also lends her animated talents to other TV shows". The San Diego Union-Tribune.