She is excited she's once again to be a part of a New Year's Eve tradition.
"I grew up watching 'New Year's Rockin' Eve' on ABC and going, 'wow, maybe someday I could be there," said McCarthy. "It's one of the most amazing experiences. It's a bucket list thing to do. I never thought I would freeze my butt down there, but that Times Square, that energy, it's electric."
And for those of you who forgot, a kiss was being teased all last year. So will she be pulling that again?
"Well I am single, wink wink," said McCarthy. "It was really good material, I'll tell you. We'll be there five hours this year so who knows who I might pull out of the crowd and find a cute guy to kiss."
To celebrate the show's long tradition McCarthy, along with pop star Fergie, will host "New Year's Rockin' Eve: The 40th Anniversary Party" featuring memorable moments from the past.
"You're going to look at some of these clips and go, 'oh my God, I remember when I was with my mom and dad watching,' specific moments that will bring you back to that time," said McCarthy. "So it'll be a great show to watch this year because of that reason. And we'll have surprises, of course, being a 40-year anniversary."
Dick Clark will be back to count us down once again, with Ryan Seacrest overseeing the evening. And McCarthy will be there to add a little extra fun.
"I remember looking, going, 'they're freezing, they're crazy, the couch is the greatest place ever,'" said McCarthy. "So if you're not coming to Times Square, I highly recommend staying home on that couch and watching."
All the fun begins Saturday at 8 p.m. with the 40th Anniversary Show. Then at 10 p.m. it's "Dick Clark's Primetime New Year's Rockin' Eve with Ryan Seacrest 2012."
There's a break for ABC7 Eyewitness News at 11 p.m. Then "Rockin' Eve" continues again at 11:30 p.m. to ring in the New Year.