Well I'v meet them at different conventions (game/scifi)
And I should add Orli Shoshan (StarWars/Shaak Ti) and Michael Winslow (SoundDude/PoliceAcademy/SpaceBalls) to that.
To make things more nerdy here's pics of them taken by me and some signed stuff.
http://www.retrosampling.se/Temp/Celebrities/and a recording from Lance to a friend who was suppose to be there but couldn't come...
I have caught Biehn and Ironside off guard too and pulled out a dictaphone when they least expect it, both lost their speech, Biehns wife Jennifer Blanc thought it was hilarious. upload those later.
And both Ironside and Henriksen has been in The A-Team in the early seasons in the 80's.
Henriksen was originally intended to play The Terminator, he's an old friend of James Cameron, and he made him wear the original terminator outfit (that he steals from Bill Paxton in the movie who's also in Aliens) and jump in on a business meeting with Fox and started shooting, convincing them that The Terminator must be made, he didn't want to play it and ended up as the cop.
Henriksen was in the original Alien, and Aliens together with Biehn and also Terminator with him.
I have stand very close (1m) to Kristanna Loken (T3), Linda Blair (Exorcist), Andrew Sachs (FaultyTowers), Kim Hartman & Richard Gibson (AlloAllo), Mads Mikkelsen (Casino Royale)
And standing by the feet of Mark Knopfler playing live (VIP)
Does that count? =)