The pilot was filmed in a real office building Scranton, PA, but the rest of the series was filmed in a studio in LA. You can notice that the outside of the building in the pilot looks different then the outside in the rest of the series. But they tried to make the inside an exact recreation so it didn't look like a new room.
The first season was filmed in Hammond, Louisiana. The remaining seasons were filmed in the Covington, Georgia area.
New York
The first season was in Calgary, I believe.
Joliet
The first sport filmed was boxing but i do not know who filmed it.
No, it was filmed in 2 months.
The pilot of Friends was filmed on 4 May 1994. This episode was broadcast on 22 September 1994. In total, there were 24 episodes in that first season, including the pilot episode.
Australia
Life With Derek was filmed in two different locations in Canada. These were Newfoundland and Labrador and in Toronto, Ontario.
The first episode in the season, "Nepotism" was released on September 23, 2010.
Zardoz was filmed in the hopes that it would be a commercial success and be a box-office hit . (It was not to be .)
In Jersey