With the economy down the toilet, unemployment rising higher, and a few other difficulties left over from the past 8 years, I understand why so many of us stay stuck in the 90's even when it comes to music. Even so, early in 2009 something changed to give us hope and reason to keep going. That something is Microsoft Songsmith. For those who haven't heard yet, Songsmith is computer software that allows users to record their own vocals, which Songsmith then takes and builds accompanying music around them to create instant songs.
The joy of Songsmith doesn't really lie in the ability for untalented off-key caterwaulers to still make their own music. Rather, the true fun of Microsoft Songsmith comes in taking the vocals from popular songs, running them through the software, then LOLing at the results (particularly when video is involved).

A few of my favorites:

Queen's "We Will Rock You" turned Latin pop.
"White Wedding"...in Kentucky.
"Crazy Train Polka" -- if only we could get Ozzy in lederhosen.
Soulja Boy cranks it Barney-style.
Lil Wayne's "A Milli" remix for entry into the TimeLife Soft 70's Ballads collection. (uncensored)