For the last set of charts we’ll see in 2008, let’s take a look at a few tracks that have had some serious longevity. For example, Jason Mraz holds at #12 this week with “I’m Yours”, currently enjoying its 36th week on the Hot 100. Also at week 36 is Ne-Yo’s “Closer”, which slips from 38 to 42. If you don’t know the chart longevity rules for the Hot 100, the magic number is 50. Any song that is below #50 after 20 weeks on the chart will be dropped completely. Two examples of this formula left the chart this week: Jennifer Hudson’s “Spotlight” falls off the chart in its 22nd week, after having been at #47 last week, and Savage’s “Swing” drops out at week 21, after lingering at #69 one week ago.

Toward the bottom of the Hot 100, there are a couple of songs from folks in the Top 10 that they’re probably hoping will keep the two-songs-per-artist trend going: T.I. makes a big move from 99 to 83 with his Justin Timberlake duet “Dead and Gone”, Lady GaGa gets her second chart entry at #92 with “Poker Face”, and Beyonce charts single #3 from “I Am…” with Diva, coming in at 96. The top debut of the week, though, goes to Leona Lewis with her former UK #1 single “Run”, which arrives at #81 with almost zero airplay. Considering that the song debuted at #13 in Canada as well, I think it’s safe to say it’s going to be a big ol’ hit. You know there’s gotta be a Deluxe Edition of the CD that’s coming, too. Maybe it’ll have a few of the UK tracks that weren’t included on the original US version. That’s a lotta double-dipping, ain’t it?

[Oh…David Cook returns to the Top 40 at #40 with “Light On”. Just sayin’…]

Switching to airplay, Britney Spears picks up her first #1 pop record since “Toxic” with “Womanizer”, but it looks to be a short stay, as “Live Your Life” is trending to retake the top spot next week. In the “eat my words” department, Ms GaGa may have the first new #1 of the New Year, as “Just Dance” creeps up to #3, and will probably be the top bulleted single next week. The two hottest records at Pop radio this week are (shock) Britney Spears’ “Circus” at 20 and Beyonce’s “Single Ladies” at 11. Both records pick up over 1000 more plays this week. The Killers make it into the Top 40 at #40 with “Human”, and in the “I can’t wait til next week” department, it looks like John Legend’s “Green Light” will FINALLY show itself on the Pop chart in 2009.

Over on the Billboard 200, Taylor Swift reaches 113 weeks with her self-titled debut, while her follow-up, “Fearless”, holds at the top of the chart with 330,000 units. For those of you who have been around the charts for a while, that is a depressingly low count for a CD to sell the week before Christmas. It barely holds off the debut of Keyshia Cole’s “A Different Me”, which debuts at #2 with 322,000 units sold. Other debuts this week included Jamie Foxx at 3, Anthony Hamilton at #12, Plies at 14, All-American Rejects at 15, Soulja Boy Tellem at a sophomore-slumpish #43 (awwwwww), and Dave Matthews Band at #97.