I am rather fortunate in that I have a good manager to work for. He checks on me about once every two or three weeks to see how things are rolling since he trusts that I can get the job done on my own. He also has several qualities that make working for him (dare I say it?) fun.
I realize this isn't exactly a checklist of what techniques he uses to motivate, but the items above are why I feel motivated on a Monday morning. I think the biggest thing is the fact that I'm trusted to do the job right with whatver tools I decide are right for the job.