With Mike Read, Keith Chegwin, Sarah Greene and Vicky Licorish. Who's in store this morning? Yes Doctor Who, in the form of Colin Baker, is calling in to take your calls. Phone him on 01 811 8055. (The lines are open from 8.30 am.) Animal expert Chris Henwood is in with advice on keeping dwarf hamsters as pets. Phillip Schofield's TV Talkback feature this week is all about sport on television: is there too much coverage, or not enough on the box? Martin P. Daniels is out and about with Keith and the delivery van this morning. Tune in at 9 o'clock and find out if he's somewhere near you. If you've heard about the Saturday Superstore talent auditions but never been to one, you can see what goes on behind the scenes this morning. The Superstore cameras went to Bristol to see young entertainers from the West Country competing for a place in the final 24 acts. As well as all this, there's cartoon adventure with Pole Position, a competition to design your own glove-puppet and all the regular features.