1. No Flash yet. When/if this ever happens I'm sure you'll know about it. It will be on every technology site in the Internet.
2. Yes. While viewing a conversation, tap Edit, which is in the upper right. Tap the one you want to forward, and then tap Forward.
3. It depends on your call history whether you can delete a single call from the log. Consecutive calls to/from a contact are lumped together, so if the same person calls you twice without anyone else calling you (or you calling anyone else) between those calls, then those two consecutive calls will lumped into one item in the call history. The more specific details are viewable, but not deletable; only the whole item (both calls) is deletable. If you have lots of diferent people calling you often, and not calling you twice in a row, then the calls will be listed separately and can be deleted separately.