Not having to many caches under my belt it would be hard for me to choose two other but here goes.
1. B&G (GC73C2)- You know the story here.
2. Max Lange Attack (GCH2GC)- First time I had decoded it wrong and the second was a pain to find the first stage once I was in the right area.
3. Beware the Beaver (GCH1R2)- two attempt to find, the first time I searched for an hour and the second time I searched for 30 mins.