Ever since I got my macro lens dust has really been showing up on my sensor so I decided to give the lens pen a try.
Just got it in today and all I can say is it the best $10 I have ever spent on camera equipment! My sensor is now totally clean and it only took about 1 min.
Darkened and uped contrast to show off dust better)
After blowing before lens pen, about 6 bad spots with about 10-15 faint spots:
After: