My personal favorite was the first one in the collection; Wait For Me. It was one of the most beautiful and moving stories surrounding time travel that I have ever seen. Seriously, Gosho Aoyama is a god of romcom elements.
The Making of Detective Conan is also surprisingly good, and my second favorite; The Detective Boys (minus Haibara) are in the real world, where they enter the TMS Entertainment studio, believing that there are businessman attempting to kill Conan. However, the truth is, they're producing an episode of Detective Conan, and we get an entertaining, yet educational and short look at the main process. Unlike the episodes airing at the time that were animated in cels, the short seems to have been animated digitally.
The Wandering Red Butterfly and Ten Planets in the Night Sky are prequels to the Detective Conan anime; It stars Edogawa Conan/Shinichi Kudo's parents, Yusaku and Yukiko. The first one takes place before Conan was born and before the two got married, and the second one is during their marriage and Shinichi is a toddler. We are shown that Shinichi was closer to his mother and even takes off from her.
Detective George was my least favorite. It felt relatively slow, and was overall just alright, but seems to be an earlier prototype of Detective Conan.
Santa Claus in Summer was another really great romcom, and I really loved the characters in the story. Without spoiling anything, the boy is the only one who can save the world, so to figure out how he is granted any wish, one of which is meeting his favorite idol.
Definitely take the time to give these a watch, especially between Detective Conan episodes. It's really worth it.
