In the corporate/docco world, I guess many of us are shooting by day, ingesting by night, and therefore the 'slating' of shots may be done on a scene by scene basis rather than the proper 'lets mark every take with a clap and a voice ident'.

So holding a bit of paper with an interviewee's name and affiliation scrawled on it will do most times (or a badge or a business card), and I can transfer that info into metadata back in the hotel room. I considered making a business case for buying an iPad for this sort of thing, but as a One Man Band things are busy enough at shoot time to fiddle with updating metadata in an app - and getting someone to write their name and 'tummy tag' info on a bit of paper isn't that daunting.

Synchronising audio? That's what Pluraleyes is for, right? ;-) Of course it isn't as Canon DSLR footage drifts from 1 to 2 frames off anyway, so one has to tweak. Hitting 'go' on the audio recorder, then buttoning on and off during an interview is actually a lot less intrusive than using a slate. IMHO.

But seriously, in the narrative world, I've used MovieSlate and others do to. It generates reports, does things with XML, and is more organised than I am, so should be entrusted to your nominated grown-up on the crew.