I also haven't met Anthony Head, much to my despair. I loved him as a teen in Buffy, and since discovering both Cabin Pressure and Bleak Expectations, I'm utterly in love with him (and his sexy voice). Actually, probably a very good idea I don't meet him, especially in my pregnant state, it wouldn't end well
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Never met anyone famous myself, only a few Welsh tv stars (S4C, so really not worth mentioning). Thought I saw Tom Cruise in Paris once, but could have been a stocky child...