Yes, of course. There is no limit to what your return could be. If you know how to work the "system" you can without doubt get back $10K or more.
Business/Work related Deductions, Charitable Donations - including cars, clothes, toys and whatnot - Family/Dependent Deductions, And of course the more you make the more you pay and the more you COULD overpay... So sure, it's not impossible for a single person to get $10K or more back.
I have a friend who consistently gets back between $9-$10K. She earns no more than $10 an hour, but between her kids and other deductions, she always gets back a good penny or two!
at 9:45 PM on May. 31, 2010