Here's a bunch of full-length Offspring concerts spanning many years.

["Melyssa K" Kennedy]

I'm not sure how many other people feel this way, too, but I prefer watching videos of the Offspring live as opposed to the music videos. Though, I like their music videos, too. I just prefer the live energy they bring to the stage and, of course, the back-up vocals of Greg K and Noodles, as well as Noodles' creative guitar-riffing. I found a bunch of full concerts on youtube and thought I'd share them. If you find more, let me know and I'll add the links.
Also, there are countless full concerts broken up into individual songs on youtube. There are too many for me to link all of those. I really recommend the Reading Festival videos. I've never heard a crowd sing so loudly!

Denver 1994: http://www.youtube.com/watch?v=y_JuIUsFejc
Göteborg 1994: http://www.youtube.com/watch?v=kN0Jy6qKqYI
Oster Rocknacht, Germany 1997: http://www.youtube.com/watch?v=XN7O14e9CoQ
Tokyo, Japan 1999 (shaky video: ) http://www.youtube.com/watch?v=270kZekPWCI
Woodstock 1999: http://www.youtube.com/watch?v=xVHHJqntuXI
Live at Wembley 2001: http://www.youtube.com/watch?v=HbEJk0g1420
Rock in Rio 2008: http://www.youtube.com/watch?v=pn0k0OKvwcc
KROQ Weenie Roast 2008: http://www.youtube.com/watch?v=LH936QSKPBQ
Planeta Terra Brazil 2008: http://www.youtube.com/watch?v=H-V1Mes3824
Lowlands 2011: http://www.youtube.com/watch?v=NRa9ALmcRhA
KROQ Weenie Roast 2012: http://www.youtube.com/watch?v=mbOphAmCCTA
Shepherd's Bush Ignition Show 2012: http://www.youtube.com/watch?v=gYmGA0lNAfw
Rock am Ring 2012: http://www.youtube.com/watch?v=j_s5mYde_ZM
Live at Kubana :http://www.youtube.com/watch?v=7n775QS_ZZo

This one is in pieces, but they are approximately 10-minute chunks, and the performance is so good I had to include it.
Almost Acoustic Christmas 2008
Part 1 (go to 7:20) : http://www.youtube.com/watch?v=zttZYtYwFr4
Part 2: I don't think this one was uploaded by the user
Part 3: http://www.youtube.com/watch?v=MIQUwLtzeGQ
Part 4: http://www.youtube.com/watch?v=ZaNquzs8vCw
Part 5: http://www.youtube.com/watch?v=IMhBP21mkew
Part 6: http://www.youtube.com/watch?v=17r4x5BHWHc
Part 7: http://www.youtube.com/watch?v=MxXQaW3YpHE
Part 8: sorry

I had to make a playlist of this one. It's a concert broken into individual songs I think is something every hardcore Offspring fan should see. It's from 1993 and the quality is pretty impressive, considering that fact! It's hilarious when Greg shoves a guy off the stage during "Jennifer Lost the War."
Live at Preston 1993: http://www.youtube.com/playlist?list...twRxVhEjrE0_gA