Might be a Saturn thing, but cleaning the throttle body helped my SL1 quiet down from intermittent high idle. It was part of the usual idle-control/boost mpg regime known to Saturnites: ECTS, t-stat, IAC valve, throttle position sensor---and spray the heck out of the TB with brake cleaner.
That worked for my Saturn, but I can't say for sure how much cleaning the TB helped, compared with replacing stuff. I would say go ahead and do it, if you have any high idle or sputtering issues.
Never touched a TB or thought much about it before I bought a Saturn, though. These are fun cars.