Movies on “About this Mac” ???

Hi,

I've been looking to free up some space on my Mac as it said I only had 2.1GB free when I went on to 'About this Mac'. I noticed it said 10.55GB underneath movies. However, I moved all of my movies onto my Exteral Hard Drive quite a few months ago so i'm confused as to where this 10.55GB is coming from. I have about 1GB of music and travel videos in iTunes and about 300MB ov videos in podcosts, other than that I have no other movies. I've used Omni Disk Sweeper and a couple of other free applications and I cant find any other movies anywhere. Has anyone got any ideas where this 10.55GB could be hiding???

On 'About this Mac' it also says 28.32GB used up by 'Other'. Is there anything I could delete to get that 28.32GB down?

I have a Macbook running the latest version on Lion.

Any advice would be greatly appreciated.

Thanks,

Matt