>> there are neighborhoods, where you had to be such a tough guy when you're outside your house, this was the character that you get to be when you're with family members and friends and you can be your goofy self and dance around. >> steve urkel made the statement that we can be whoever we want. i played bruce lee. elvis, albert einstein. >> the evolution of the nerd in sitcoms is an interesting one to watch. we went from urkel and screech, which is the joke character. to something like "big bang theory" where you have a group of nerds that are the stars of the show. ♪ it started with a big bang ♪ >> inconceivably brilliant, guys that can figure pi to 80 decibels but were very child like.