With X-Men: Days of Future Past coming out next month, 20th Century Fox showed fans at WonderCon in Annaheim an extended scene from the film this weekend. Screenwriter Simon Kinberg spoke about the film and revealed some '70s tidbits from the time travel film. For one, President Nixon himself will appear in the film.

What's a superhero movie nowadays without the world crumbling around our intrepid heroes? We get that and more in the second trailer for X-Men: Days of Future Past. Check it out below. In X-Men: Days of Future Past, the characters from the original X-Men movies will have to join forces with their younger selves from X-Men:

With an epic storyline, amazing cast, and plum May 23 release date, X-Men: Days of Future Past looks like one of the blockbusters to beat this summer, so it comes as no surprise that Empire Magazine is celebrating the 25th anniversary of its first publication with an X-Men tie-in. To commemorate the occasion, Empire has just rolled out a whopping 25 Days of Future Past covers, each one depicting a different character from the movie -- including our first in-depth look at the highly anticipated Sentinels (pictured above).