Video copies of coup-related announcements are appearing on YouTube. Below is the first televised announcement of the take-over by the military.
There's also a capture of the televised announcement of the “first and second orders of the Democratic Reform Coucil” , a previously unknow organisation and the name used by the military who have taken control of Bangkok.
A search on the photo-sharing website flickr  on the keyword “coup” brings up nearly 100 pictures from Thailand posted within the last 24 hours from pictures of the army in position round the streets of Bangkok…
[Picture by goshen42 ]
…to visual evidence of the blocking of foreign cable TV channels
[Picture by kengz]
The bulletin board 2Bangkok.com  has a regularly-updated page devoted to the current coup events High tension in Thailand but the most recent post warns that internet connections are becoming very slow.