No, not the Michael Keeton character, but the star, the massive star (5.5 AUs wide) in Orion. Betelgeuse has shrunk 15% since 1993, and astronomers are puzzled as to why:
"To see this change is very striking," said Charles Townes, a UC Berkeley professor emeritus of physics. "We will be watching it carefully over the next few years to see if it will keep contracting or will go back up in size." (Townes won the 1964 Nobel Prize in physics for inventing the laser and the maser, a microwave laser.)
Though the star is shrinking, its visible brightness has not dimmed significantly over the past 15 years, the researchers say.
"But we do not know why the star is shrinking," said Edward Wishnow, a research physicist at UC Berkeley's Space Sciences Laboratory. "Considering all that we know about galaxies and the distant universe, there are still lots of things we don't know about stars, including what happens as red giants near the ends of their lives."
The really sad part of studying such items for an astronomer is the massive timescales involved. Stars live billions of years, so the amount of time we have in our lifetimes to study them is a microscopic portion of the total.