C-64A Flash-based C-64 Emulator has been released. I have known about java-based emulators for quite some time, but this is the first time a Flash-based C-64 emulator has surfaced. It needs the new Flash 9 player (which is still in beta at the time) and with this Flash version the complexity of Flash-programs is significantly enhanced in my opinion. I remember Flash as just having some scripting capabilities, but it has turned into a genuine programming language.
Check it out over here.