Needless to say, there's a huge number of reasons to believe this CMBR pattern could be something entirely different, but it is certainly intriguing considering the physicists used two different instruments (WMAP and BOOMERANG) and found a similar pattern in both.
Another mission, the European Planck space telescope, is currently mapping the microwave background too, so it will be interesting to see whether a similar pattern emerges.
Sci-Fi Does Sci-Fact
So what's my reference to SGU got to do with this mindboggling research? In the sci-fi plot line, our human explorers aboard the Ancients' spaceship Destiny are currently on a whirlwind tour of interstellar and intergalactic space where each episode is punctuated with crew problems, alien encounters, stargates and wormholes. The Ancients, as the name suggests, is an extinct (we assume) ancient hi-tech alien race.
In "The Greater Good," an episode that ran a couple of weeks ago, physicist Nicolas Rush (played by the superb Robert Carlyle) announced that he knows what the Ancients were studying (thereby revealing the main story arc of the whole season): a pattern discovered in the cosmic background radiation.