PS2 emulation on bizhawk is missing right now but is an important part of retrogaming history and is now finished enough that Tas recording is now possible with PCSX2. It would be an awsome improvement to Bizhawk which is part of a all in one and simple to use emulator goal.

• TAS feature in PCSX2: video recording, core patching/debuging, console logging, input recording.

However, due to it's design, it must be integrated as a standalone emulator (like in retropie):

I can give you the build compilated with source code and update it when necessary.

Note: 1.6 stable will be comming very shortly.