Absolutely Average At Best

I thought as it's 80 odd minutes it wouldn't really matter if it wasn't any good. It felt longer. Much, much longer. I thought it was a film for kids (what with the juvenile jokes and a cute talking dog) but all of a sudden there's a Terry Jones cameo where he's buggered by an invisible force, Kate Beckinsale dropping four f-bombs in a solitary swearing scene, a brief flash of boobs and references to bestiality. Williams and Eddie Izzard come out of this generally unscathed (as does Joanna Lumley) but probably only because Eddie's only in two scenes and likely adlibbed rather than rely on the script. I suspect had this film been made decades ago it would've featured a plethora of cameos and acknowledged the sketch format it belonged in. However someone's clearly stepped in and attempted to modernise the screenplay, managing to create a wildly uneven film that deftly manages to avoid providing any pay offs. They didn't even bother making it sound like Robin Williams was in the same room as Simon Pegg. Sure enough, as the end credits roll you'll see him in a booth recording it. If you manage to get that far of course. I had three walk outs during this one.
Funniest bit for me came after about sixty minutes when a portly lady behind me let rip a snore so loud I thought a chainsaw was starting up. It was truly epic. Otherwise, largely chuckle free. Think I'm either 30 years too old for this film or 45 years too young. Either way I'm glad I have a cineworld card. Would be sorely pissed off otherwise. A generous 4/10.