I use it but haven't really fiddled with it much. Rarely need to go into the dashboard, it all just works really.

That's just the kind of endorsement I need :D

 

I'm wondering if they have any funky, genuinely useful apps - like a proper wiki, ticketing systems, etc.

We're in the process of moving to GAppsfo'bidnezz here, but I'm not doing it so I can't tell you how well it's going. All I know is that my email address hasn't been moved over yet.

There's plenty of stuff in there. Oh, reet do use Sites for an "Intranet" system at a very basic level.