Multi-hatted Tim Gregory and Oliver Watts shake the dust off the hoary Audio-guide form (sometimes clumsily called an acousti-guide) and skew it to their own entertaining purposes.
They democratically cover things cultural - from Entombed Terracotta Warriors to the Local (pub) and everything in-between.
Some of their guides can be downloaded to accompany physical walkabouts in the precincts they describe. Or may be enjoyed by armchair travelers who'll never make it to the places, events and exhibitions they bat about between them.
In either case they're worth an ear.
I'll let them do the talking