About 20 years ago a local UHF station aired chopped reruns of SNL, and I saw seasons I’d never seen before.
There was a sketch that’s stuck with me all this time, which I thought featured Buck Henry. The host of a talk show dealt with two guests who had competing problems: one lived five seconds in the past, the other five seconds in the future. I can’t find reference of this on Google, partly because “past” and “future” are too common words even when paired with SNL. I seem to be wrong about Buck Henry, because that search term isn’t helping.
Can anyone help me find video or even a transcript of this?
Are you sure it was SNL? Because Henry was also in a very short-lived sketch comedy show called The New Show in the mid-80s, too.
I thought I found it for one second, but it turns out that Buck Henry had too many SNL appearances and more popular skits.
Here are SNL transcripts, if you can narrow it down to a year, it would be easier to find. If it helps, Buck Henry seemed to be pretty popular for SNL between 1976-1978 (he last hosted in 1980).
ETA: I just caught the part of the OP saying “I seem to be wrong about Buck Henry”, so…ummm never mind. I do remember (vaguely) the skit though, so I’ll be back if I actually find it. 
I’ve been using that site already, but it’s not helped enough. I don’t know the year, because I wasn’t very familiar with the older casts when I saw this in 1991, and the station wasn’t announcing the airdates.
The other problem is that I don’t think “past” or “future” were ever said by an actor. It just becomes apparent that this is the reason for the awkwardness of the interview, as the guests keep answering questions at the wrong times.
From the SNL expert on the TV.com forums:
The sketch is “Patty’s Place,” from the Robin Williams/Adam Ant broadcast from Season 9. The three actors in the sketch were Mary Gross, Tim Kazurinzky, and Julia Louis-Dreyfus. I wish I had a clip of it, but I don’t, sorry.
that transcript site wont load, but i found the cached transcript using google, then I clicked “text only version”