In 2012 I saved a little over 65% of my pre-tax work salaries (1 full-time job, 1 part-time job). This does not include investment income (which is typically set to reinvest). Maxed out Roth, nearly maxed the 401k (couldn't max because I didn't have access for whole year), and added a bit to taxable accounts. This was an unusual year though, as I worked part-time and finished up my master's degree the first few months of the year before going on to full-time employment.
For 2013 I hope to save about 45% of my pre-tax salaries. I don't make much, but I also live pretty cheaply since I'm young, have cheap rent/roommates, and have simple hobbies (e.g. running). I don't feel like I'm living that frugally, as I buy any food I want and all the stuff I want (although I don't want much).
My only expensive interest (that I'm trying to make into more of a true hobby) is traveling. In addition, a house in a few years (if I go that route) will likely throw a wrench into retirement savings, so I'm trying to get a good head start!