As part of our new guest blog series, E! star Heather McDonald has written an essay for AOL TV about her many hilarious celebrity encounters on 'After Lately.' Stay tuned for more posts from the 'After Lately' cast of comedians.

When Jen Aniston entered the set of 'After Lately' (premieres Sun., Nov. 27 at 11PM ET on E!) to shoot her scenes, the first thing that I noticed was her T-shirt. It was the classic Jen Aniston T-shirt she is famous for (with the heart-shaped neckline and cap sleeves), and that is exactly what came out of my mouth: "Jen, you're wearing the Jen Aniston T-shirt you're famous for." And she responded with, "What, that's weird." It was weird (and weird for me to say out loud), but look up paparazzi photos of Jen running errands throughout the last 15 years and she's consistently wearing that style of T-shirt, with her perfect, cute real boobs in a non-padded bra. In fact, that night I told my husband about her cute boobs, and my 5-year-old son looked up from his iPad and asked, "Boobs can be cute?" "When they're Jennifer Aniston's they can be," I answered.

Tonight, Chelsea Handler addressed rumors that she's dating rapper 50 Cent, but she did so with a wink and a grin. Then, in a surprising move, "50" himself showed up on 'Chelsea Lately' (weeknights, 11PM ET on E!).

Handler mentioned her hypothetical relationship with a "certain rapper with a number in his name." Chelsea joked that her show's staff was also obsessed with the gossip -- to the point where they started a book club to learn more about 50 Cent.

Staff comic Heather McDonald led the club, having the group read 50's own autobiography, 'From Pieces to Weight.' Then, Mr. Curtis James Jackson III (a.k.a., "Mr. Cent") walked through the door.

Comedian and 'Chelsea Lately' writer Heather McDonald regales Kathie Lee Gifford and Hoda Kotb with a range of skilled impressions on the fourth hour of 'Today' (weekdays, 7AM ET on NBC).

I love these little mini-essay rants that Chelsea Handler does. It makes me want to watch her show, though I always always always forget that it's on and always miss it. Here she talks about how one of the Chelsea Lately panelists, Heather McDonald, is obsessed with the Real Housewives shows on Bravo. (Video also here.)

Oh, like 92% of everything Handler talks about, this is NSFW.