Ardal O'Hanlon - So I can PMSL while eating.
Graham Norton - See above, but the laughter would come for a different reason.
Valentino Rossi - Highly unlikely he'd ever come, and I could never understand what he's saying, but he's still invited.
ScaViEr - I'm counting as one guest, we'll squeeze 'em onto one chair if needs be
Mario Rosenstock - He'd probably count as about 30 people, due to his line of work. Can't not invite him though
As a chef, I'd choose
Jamie Oliver, as it would give me my chance to laugh at his lisp. As a sidenote, he's not a half bad cook either.
There's a few more I'd like to bring along, but I can't have them all