On Feb. 15, 2011 an X2 class x-ray solar flare was observed by the Solar Dynamics Observatory. Below is a video from the SDOmission2009 YouTube channel of the of the eruption:
Here is the description of the video from the SDOmission2009 page:
"The X2 flare of Feb. 15, 2011 seen by SDO (in extreme ultraviolet light) enlarged and superimposed on SOHO's coronagraph that shows the faint edge of a "halo" coronal mass ejection as it races away from the Sun. The video covers about 11 hours."
You can find more videos from the Solar Dynamics Observatory at SDOmission2009.