As far as I'm concerned Mike is the star of this episode - the Steven Seagal pose, the thinking noises, rolling down the corridor, convincing Brian he's a man not a mouse with the Thunderbirds theme, the way he reads 'Tim' on the front of Daisy's letter as if he's never heard of anyone by the name. Superb.
My other favourite moments include Tim puckering up for a kiss with Marsha only for her to respond with 'Kiss my arse', and the way Brian half-heartedly waves at Marsha from the tank. And the closing montage never fails to bring a smile to my face.
I'm sure I've missed plenty out, so please fill in the gaps!