Message From Space & Krull are usually a fun watch.
I can't comment on Message from Space, not having seen it, but, I have to agree with Krull, which actually winds up being one of my favorite films of all time.
Both Liam Neeson and Robbie Coltrane would get one of their 1st film roles in this film. This would be Coltrane's 6th film role and Neeson's 4th.
On the other hand, this would bring to a close John Walsh's role in films, after over 30 years as a film actor and over 180 roles, this would be his last theatrical film.
Though, I think one of the most interesting acting facts is that after playing the hero in this film, Ken Marshall, 14 years later, would appear as Lt. Commander Michael Eddington in Star Trek : Deep Space 9.