Dead Like Me

We're currently watching Dead Like Me. Or, rather, Jenny's watching and I'm re-watching. And this time through it occurs to me that there are quite a few people appearing in DLM that I've seen elsewhere. As far as I know right now, there are three from SG-1 (Sgt Harriman, Apophis and Janet Fraiser), three from Battlestar Galactica (Sarah Porter, Elosha and Maya) and one from Firefly (Kaylee). Undoubtedly there are more that I've missed.