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If the girl was wearing red tights, and the guy punched the 'dragon' on the nose, and the knight with the long white beard was acting rather strange, then I believe you're talking about the Sy Fy two part miniseries 'Alice' and the dragon was actually the Jabberwock. It's an interesting modern take on Alice in Wonderland and I highly recommend it. This video clip has part of the scene I believe you're referring to: https://www.youtube.com/watch?v=72TLRa5KB8s
The pertinent scene starts at about 2:59.
Yeah that's it. Thanks.
^Not actually my favorite animal.
I was at the store recently and on the display T Vs they had a movie on, and I'm curious as to which one it was. There was a man and a women in a forest, and a dragon, the dragon got its neck stuck between two trees.
Later they came across a knight with a long, white beard.