We don't develop Flash at Engage, but we do implement it a lot in websites we develop. As a result, I am frequently hunting down the best way to implement flash in DNN.
I had an example of the HTML saved on my desktop because I was referencing it so frequently, but I realized that's a good way to get set in old ways. I'm creating this blog post as a repository for references I use to find the latest in embedding Flash (swf) in HTML.
First, is the <swfobject> project. The swfobject project maintains a small javascript file used to detect flash and embeds the Flash file (swf).
The second resource is a generator for the HTML using the swfobject.
If you know of better, easier, more effective, fool-proof, ways - let me know. For now this is the way I follow.