There was a print that Skymall was selling through their catalogs
about three years ago.  Unfortunately I don't remember the vendor, or
the name of the print's original author.

I'm looking for the name of the painting's author.  The author is
Spanish, I believe, but I'm not entirely sure.  The painting was
titled "The Dancer" or something very similar.  The painting itself is
done with a lot of yellows, and is of a woman with her back facing the
painter, arms out to her sides in a dance pose.  She is not a
ballerina.  It'd also be nice to find out where I can buy this print.

Could it be "The Spanish Dancer" by Henri de Toulouse-Lautrec?
http://community.webshots.com/photo/41131756/41134182YIgiqB

That's close, but it's not the same one.  In the painting I'm looking
for, the dancer is facing away - you can't see her face, and it's a
more of a landscape orientation (more wide than tall).

Thanks though,

Maybe try Edgar Degas. Or Diego Riviera--perhaps his "Baile en
Tehuantepec" (Dance in Tehuantepec).  (Neither is Spanish, but the
names are close.) Or perhaps it was by John Singer Sargent, an
American painter who loved to paint Spanish dancers like this one:
http://www.jssgallery.org/Paintings/Spanish_Dancer_(woman).htm