They should definately stick to Gavin & Stacey. I was trying to keep myself awake all the way through and only stuck it out 'cos Family Guy was on after!!
Like most sketch shows it was a bit 50:50 for me some sketches i liked and made me laugh but others were just not funny.
I was surprised at how good James Corden's Ricky Gervais impression was though!
I absolutely love Gavin & Stacey and watched Horne and Corden but half way through it dawned on me that I was too old for this type of humour and I switched off - it was a bit too coarse for me, I'm afraid - not funny.