OK. Mine are a little messed up, since I only just got the HQ downloads and I'm not the only one who listens to my iPod. I am, however, the only actually obsessed person who listens to my iPod, so let's say these are mostly accurate.
1. Case of the Dynamite Dame (There's a weird thing where it suddenly stops at multiple points during this ep, so each time I listen multiplies the count by at least 3. But it's still at the top of the list, and let's say it counts)
2. Murder in the Castle
3. The Boy in Blue
4. The Gathering Storm/Trial by Terror/A Very Decoder Ring Christmas!
5. The Third Wave
6. Justice Be Done/Curse of Beaton Hall/The Field Trip/Jungle of Terror
So there are a lot of ties after that, and I stopped. Fewer BlackJacks, which was surprising, actually.