Calling all x men fans?

Question

Can you name me the episodes at, :51, 1:21, 2:30,3:27

thanks!

http://www.youtube.com/watch?v=rT11pIJ9Ykw

Answer 1

:51 -- Episode 53 Nightcrawler

1:21 -- Episode 14 Till Death Do Us Part    Part 1

2:30 -- Episode 25 Reunion    Part 1

3:27  -- Same scene as the one on 2:30

Answer 2

The first guy is right they are.

:51 -- Episode 53 Nightcrawler

1:21 -- Episode 14 Till Death Do Us Part Part 1

2:30 -- Episode 25 Reunion Part 1

3:27 -- Same scene as the one on 2:30