A little patience and capturing a Bee inside a flower isn’t too hard: getting one in focus is a bit tougher. Go high ISO.
Hardware: Olympus E-P1, Zuiko 4-1150mm f/4-5.6
Exposure: ISO 400, 1/1500s @ f/5.6, 150mm
Post: Cropped, selective burn, selective sharpen (bee), selective blur (rear flower).