Steak: I'll take the Keg (Baseball Sirloin). Not into overpriced steak joynts.
Quickie chains: Portillo's Hot Dogs, (man is that chocolate cake good there)
or a DoubleDouble at In-N-Out.
Gyros: The Smokehouse in Wheaton, IL. The gyro plate is about a pound... yikes...(well, not really a chain, they have 2 of 'em).
Honorable mention: McCormick & Schmicks.