Very entertaining! Looks like it's from The Royal Variety Performance, back in the day.

To add to the comment I added on that post, I've always known who he was because the likes of The Goodies would make fun of him (and Sir David Attenborough, and the likes). He's a fairly well-known astronomer, and a slightly less well-known xylophone player, who has played (in 1981) for the Queen in a Royal variety performance.

I don't think I've ever seen him without his monocle.

In reply to this comment by Fusionaut:
http://videosift.com/video/Space-Snacks-With-Sir-Patrick-Moore-the-astronomer
lol, I went to go see who Patrick Moore was and found this.
In reply to this comment by oritteropo:
Close. I would vote for Giraffe number 1, then Kenya. Maybe they're my equal faves with Scampi and Badger coming after.

I don't like all of them, the salad fingers ones and the like leave me completely cold (choccy otoh leaves me hungry

Oh no! I forgot Patrick Moore! Now I don't know whether I like it more than Scampi or not... OK, I'd better stop here before I get really confused...

It is definitely the Royal Variety Performance as they all bow to the Royal box at the end.