It's safe to say Bill Gates isn't wandering the aisles of the supermarket, but his recent appearance at The Ellen Show confirms it.

The 'Bill's Grocery Bills' Game

The Microsoft mogul was a guest in the show on Wednesday, when he played a game similar to The Price Is Right. Dubbed the "Bill's Grocery Bills" game, the challenge involves guessing the prices of regular grocery items including Rice-a-Roni, Tide pods, dental floss, pizza rolls, and cheese dip.

"When's the last time you've been in the supermarket?" DeGeneres asked jokingly.

"A long time ago," Gates admitted.

True enough, the renowned businessman and philanthropist found the game very difficult. While he's confident on just one of the items (dental floss), the audience helped him out, reacting over his choices and shouting suggestions.

Fortunately, for the crowd present during the show, Gates got three out of the five correct, which means they win a prize: a ticket to come back to The Ellen Show on one of DeGeneres' annual "12 Days of Giveaways" during the holiday season.

Bill On Television

Gates's first The Ellen Show appearance was a success, and the mogul is set for more television gigs in the future. Recently, it was announced that he will be in season 11 of Big Bang Theory as himself.

The Microsoft cofounder will be on the long-running sitcom for a single episode, but it'll be one for the books with Penny (Kaley Cuoco) welcoming him for her work and the rest of the gang angling to meet the icon.

It's not unusual for the popular television series to host a big name, with several already gracing the sitcom: Buzz Aldrin, Stephen Hawking, Steve Wozniak, Leonard Nimoy, George Takei, and more.

The Big Bang Theory will host Gates in an episode in March.

Bill Outside Entertainment

However, not all of Gates's time is taken up with television appearances. The billionaire is a known philanthropist, donating a big chunk of his wealth through the Bill & Melinda Gates Foundation.

Just last year, Gates gave away $4.6 billion of Microsoft shares to their foundation, which is already the world's largest private charity with over $40 billion worth of funds. Since 1994, the pair have given $35 billion in charity.

In an interview with The Telegraph in 2013, he points out that his needs are all taken care of.

"Money has no utility to me beyond a certain point," Gates explains. "Its utility is entirely in building an organisation and getting the resources out to the poorest in the world."