‘The Big Bang Theory’ makes history doing what no other TV cast has done

The friends of apartments 4A and 4B are going out with a bang.

The stars of “The Big Bang Theory” cemented their handprints Wednesday at the famous TCL Chinese Theatre in Hollywood, marking the first time a TV series has been honored in such a ceremony, according to Entertainment Weekly.

Johnny Galecki (Leonard), Jim Parsons (Sheldon), Kaley Cuoco (Penny), Simon Helberg (Howard), Kunal Nayyar (Raj), Mayim Bialik (Amy) and Melissa Rauch (Bernadette) signed their names in the concrete as they continue to say goodbye to their characters before the show’s final episode.

Nayyar shared a hyperlapsed video of the big moment with a single word caption: “Forever tbbt.”

“Signature practice. Am I dreaming?!,” Cuoco wrote on Instagram.

The cast finished their final taping Tuesday, and there were plenty of tears as they bid farewell.

“The Big Bang Theory” debuted in 2007 and is syndicated worldwide. The CBS series has received 52 Emmy Award nominations with 10 wins to date and seven Golden Globe nominations.

The TV show’s finale airs May 16, ending as the longest-running multicamera series in television history.