Well, 42 is also the answer to life, the universe, and everything.
Giles ,'Lies My Parents Told Me'
Lost: OMGWTF POLAR BEAR
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Okay, I feel like I missed an important class in college: who's Rambaldi?
It's an Alias thing, Teppy. He had all these prophecies, and the first couple seasons were spent searching for Rambaldi artifacts. He is like the Emperor MacGuffin.
and then didn't they just give it up this season, no more references, nothing more doing?
Tep, the burned part comes in with the fact that it seemed like there was this very cool, overreaching arc being built...and it all kind of fizzled into a hand wave hand wave thing that made many of us suspect that they never really had a clue where they were going with it in the first place.
42. Some important number in numerology?
It's the Answer to the Ultimate Question of Life, the Universe, and Everything.
Sean and I are obviously HGTTG junkies. I can't even see the number 42 without instantly thinking that.
and then didn't they just give it up this season, no more references, nothing more doing?
They were, but they reneged. He's back. (But thankfully in such a way that Sydney is as sick of him as the audience is, and not shy about making it known.)
There have been Rambaldi references in the past couple of weeks. . . but then they've also brought back Sark and Anna Espinoza.
42 is also the number of Mulder's apartment. Which was, itself, an HGTTG shout out, I believe. But still, there could be layers. I expect if they were trying for an X-Files reference they'd work 1013 in there somewhere instead.