Aliens, Knights.... Help!?

[vegeta960]

Hey all, i'm trying to locate the name of a film, unfortunately i don't know when it was made (possibly late 80's, early 90's), or who stars in it.

Basically i was watching late night tv, and the film was on either Bravo or Sci-Fi channel in the UK.

The film in questions was set during medeival times, the knights being total douche-bags, incompetent etc.
From what i remember, their princess is captured by alien, or they are all abducted.
It was a comedy film, and one line sticks in my mind from it which may help:
"you b#llock-faced b#stard"

That quote came from one of the aliens to another alien. Who funnily all had Scottish accents.

I hope anyone can help, despite the lack of information, but that's all i can remember.
Thanks.

[JJ80]

Possibly this:

http://www.imdb.com/title/tt0110024/

[vegeta960]

Dude! You are a legend, that's the one!

Thankyou very much.

[JJ80]

No problem!