HERE’S Regis Philbin- like you’ve never seen him before!

It’s a pumped-up Reege, playing himself, on the CBS sitcom “How I Met your Mother ” – and boy, has he got a beef with these guys.

The episode, airing Sept. 29, revolves around Marshall (Jason Segel), who’s desperately trying to find the Manhattan burger joint where he had his best-ever patty eight years before.

In his quixotic quest, Marshall remembers that Regis’s photo was on the wall of the place.

So, he and the “HIMYM” crew, including Barney (Neil Patrick Harris, pictured with Regis), finally track Reege down at his midtown gym so they can ask him where the place is located.

And that’s when sparks fly (all in good fun, of course).

The show airs 8:30 p.m. on Ch.2.