That's him! Mark Heap. If you liked this video (a bit of a crime that I could only find it in such low qual, his facial expressions are amazing), consider checking out a show called Green Wing. He's sort-of a main character and very, very ridiculous in it. It's a 'hospital show' but don't let that put you off, it's just the setting, the scenes are all pretty bizarre.

"Wipe them off.... with windscreen wipers?"

"Well you see, it's not strictly anything to do with me, sir."

Those lines just kill me everytime. Mark Heap is one of my favourite comedic actors, he just seems to nail the whole 'strange man' vibe (check him out in Green Wing, one of his most ridiculous characters). No idea how they kept a straight face during this and it looks like the woman nearly breaks at one point!