There's some great chemistry between Sid James and Joan Sims; it's a pity though that it is in the context of an extra marital dalliance. I completely agree with you about the strip poker element.
I've said it before and I'll say it again - I liked Columbus (as did the Barbican audience at the complete retrospective in the 90s). The then-Young Turks of Britcom like Julian Clary and Rik Mayall fitted in well, there were some suitably corny jokes and Jim Dale made a good lead. it really isn't half as bad as everyone says. Even Emmanuelle has some amusing moments (the flashbacks). England is the only one completely devoid of any merit, IMO.