On this week's episode of The Office, Pam tried her best to figure out who was coming to her and Jim's wedding.

Consider this a spoiler, but we can confirm that the entire gang makes it to Niagra Falls for the October 8 episode titled "Niagra."

During this one-hour special, Jim will screw up his rehearsal dinner toast; Kevin and Oscar will be mistaken for a couple; Andy will go after Erin; and, oh yeah, the ceremony viewers have waited five years for will take place!

Be warned: The Office quotes that week may be as sentimental as they are funny. We can't wait.

Click on the photos below for an early look at scenes from the episode, highlighted by a certain, once-in-a-lifetime kiss:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.