David Duchovny's early embarrassment

(BANG) - David Duchovny is embarrassed by early episodes of 'The X-Files'.

The actor - who reprises his role as FBI Agent Fox Mulder in the forthcoming big screen adaptation 'X-Files: I Want to Believe' - says his acting ability has advanced considerably since he first started out on the show.

He told Parade.com: "When I have the misfortune of catching a re-run of one of the early 'X-Files' - like from 1993 - and I see myself I just think, 'Thank God that I got the chance to continue to work and figure out what kind of an actor I am.'

"The guy that I see on the screen in '93 is just barely hanging on. Fifteen years later it's a whole different ballgame. It's night and day the way that I work as an actor."

David also admitted he struggled to find his feet when he first began filming the new movie after a six-year absence and it wasn't until his co-star came on set that he was able to relax back into the role.

He added: "I thought I would fall back into Mulder very naturally, but at first, it felt a little odd. I was filming in Vancouver for two weeks before Gillian Anderson came on the set.

"I was just running my butt off and I don't run like I used to, so I pulled a muscle. But then Gillian arrived, and it seemed like we'd come back from summer hiatus on the TV series.

"That's when I started to discover Mulder again for real instead of kind of faking it like I was doing in those running scenes."

'X-Files: I Want to Believe' is released in cinemas later this summer. (C) BANG Media International