With an eighth week atop the Billboard Hot 100 for "We Found Love," featuring Calvin Harris, Rihanna links her longest command of the list.
The song's reign bests the seven-week rules of two of her prior leaders: 2007's "Umbrella," featuring Jay-Z, and last year's "Love the Way You Lie," on which she assisted Eminem.
"Found" also takes over as the longest-leading No. 1 on the Hot 100 this year (just beating the buzzer, as this week's Billboard charts are dated Dec. 31, 2011). The song had been tied with Adele's "Rolling in the Deep" - the year's No. 1 Hot 100 song  - for the chart's longest penthouse residence this year.
Here is a look at the titles to tally the most weeks atop the Hot 100 in 2011:
8 weeks, "We Found Love," Rihanna featuring Calvin Harris
7 weeks, "Rolling in the Deep," Adele
6 weeks, "Born This Way," Lady Gaga
6 weeks, "Party Rock Anthem," LMFAO featuring Lauren Bennett & GoonRock
5 weeks, "E.T.," Katy Perry featuring Kanye West
5 weeks, "Someone Like You," Adele
The last song to top the Hot 100 for a longer span than "Found"? Ke$ha's "TiK ToK," which began a nine-week domination in January 2010. (Read on for news on Ke$ha's latest Hot 100 appearance).
"Found" remains at No. 1 on the Hot 100 by logging a fifth week atop Hot 100 Airplay with 148 million all-format audience impressions (up 1%), according to Nielsen BDS. On Hot Digital Songs, the track holds at No. 2 for a fourth frame, after five weeks at No. 1, with 149,000 downloads sold (down less than 1%), according to Nielsen SoundScan.
Below "Found" on the Hot 100, LMFAO's "Sexy and I Know It" racks a seventh week at No. 2. The song nets a third week at the Hot Digital Songs summit (152,000 downloads sold, up 2%), while dipping 2-3 on Hot 100 Airplay (109 million, down 2%). While it still could command the Hot 100 going forward, "Sexy" has now spent the most time peaking at No. 2 since Lady Gaga's "Bad Romance" (also seven weeks) in 2009-10.
Bruno Mars' "It Will Rain" remains at No. 3 on the Hot 100 for a fourth week, claiming Greatest Gainer/Airplay honors for a third consecutive week as it jumps 4-2 on Hot 100 Airplay (111 million, up 16%). On Hot Digital Songs, "Rain" remains at No. 4 (126,000, down 3%) after leading the list two weeks ago.
Flo Rida's "Good Feeling" rises 5-4 on the Hot 100, as its audience grows by 5% to 91 million and its digital sales gain by 1% to 126,000. The song trades places with Katy Perry's "The One That Got Away," which lifts 6-5 on Hot 100 Airplay (100 million, up 9%) and holds at No. 6 on Hot Digital Songs (116,000, down 2%, despite its 69-cent sale pricing  in the iTunes Store). The B.o.B-assisted remix of Perry's "One"  was released to iTunes yesterday after arriving at radio last week.
Jay-Z and Kanye West's "Ni**as in Paris" bullets at No. 6 on the Hot 100 for a second week and Adele's former five-week No. 1 "Someone Like You" is likewise a non-mover at No. 7.
David Guetta's "Without You," featuring Usher, ascends 9-8 on the Hot 100, swapping spots with Maroon 5's former four-week leader "Moves Like Jagger," featuring Christina Aguilera (8-9). T-Pain's "5 O'Clock," featuring Wiz Khalifa and Lily Allen, rounds out the Hot 100's top 10 for a second week.
Just outside the survey's top tier, Adele's "Set Fire to the Rain" bounds 21-13 as the Hot 100's Greatest Gainer/Digital, roaring 17-7 on Hot Digital Songs (100,000, up 75%). The latest single from "21" - Billboard's No. 1 album of 2011  - concurrently climbs 34-20 on Hot 100 Airplay (44 million, up 35%).
As teased above, Ke$ha returns to the Hot 100, as "Sleazy Remix 2.0 Get Sleazier," featuring Lil Wayne, Wiz Khalifa, T.I. & Andre 3000, re-enters at No. 38. Originally a solo track on Ke$ha's mini-LP "Cannibal," released late last year, the song first spent a week at No. 51 on the Nov. 20, 2010, Hot 100. The new version blasts back onto the chart, and Hot Digital Songs at No. 15, with 63,000 downloads sold.
Thanks to its quartet of superstar guest rappers, "Remix 2.0" could grant Ke$ha her first notable inroads at mainstream R&B/hip-hop radio, where early major market supporters for the song include KBFB Dallas, WUSL Philadelphia and WPGC Washington, D.C. (as the track also begins at mainstream top 40 radio).
Check Billboard.biz tomorrow (Dec. 22), when all rankings, including the Hot 100, Hot Digital Songs and Hot 100 Airplay, will be refreshed, as they are each Thursday.