Watch: Trailer of the 'Friends' reunion is here, and it will make you super nostalgic

Remember the time when the cast of Big Bang Theory took a selfie with the cast of Friends? Here, let us refresh your memory:If a hundred thoughts are crossing your mind right now, take a pause. This picture was clicked at the NBC James Burrows tribute, which saw the cast and crew of all the most revered shows of the network come together to pay homage to Burrows, the director behind Friends, Will and Grace and Big Bang Theory, among others. He recently directed his 1000th episode, and has been an NBC favourite for years.[caption id="attachment_2614024" align="alignleft" width="380"] The cast of Friends. Youtube screen grab.[/caption]And now, a trailer of the 2 hour long special has been released, (to over a million views on Youtube, no less), and it's possible even more entertaining than all the shows combined. How is that possible, you ask? Well, that's because it shows all our favourite actors in their true element.There's Jennifer Aniston, David Schwimmer, Matt LeBlanc, Courtney Cox and Lisa Kudrow, along with the cast of Big Bang Theory, Jim Parsons, Simon Helberg, Johnny Galeki and Kaley Cuoco — all being themselves. What a laugh riot!The announcement of the special was made a couple of weeks ago, and soon after we heard that Matthew Perry would not be a part of it. However, we hate to say this, but there's so much fun happening in this 40 second trailer that we barely missed him.Here, watch the trailer: