I still say every character in "Peep Show" embodies an aspect of David Mitchell's psyche. My interpretation of this scene is that David Mitchell was trying to lose weight, and is mad at himself for eating a donut.
love the show and have been following it for years - also love this clip. however, i've got to say that season 8 has been a disappointment. they've roped both characters into the whole dobby situation instead of giving Jez and Mark separate romantic focuses. i hate to say it, but it looks like they've run out of ideas... :(
Mark Corrigan has some fantastic "wins" throughout this show and they are always all in his head.
"She doesn't love me, now I just have to get her to admit it and I win... somehow this means I WIN."
(buying condoms for Jeff and Sophie)
"I'll just go for these. Coloured. At least that'll make him look faintly ridiculous. I win... in the most minor way possible. "