It started on Sunday.

Every time I make a reference to a TV show, song, book or comic in a page of Gilbert and Grim I will be challenging you to guess what it is.

What do you get in return? You get me to draw you something, anything (within reason).

Charlie got Sunday's reference and as his prize requested a caricature of John Cleese. Here's what I came up with. The photo was taken by Jess (fornowiamnothing).

If you want to make the next request make sure you check in on Tuesday 4th and have a go.