On Youtube there are some full length full HD documentaries that look stunning on a Streak.
E.g. "Coral Island Adventure" - make sure you choose the 46 minute one. There are also quite a few other Imax documentaries and others om space etc.
I use the Firefox add on "FVD" to directly convert to MP4.
I also download them via either via the free "Any Video Converter" or the excellent "Aura Video Converter" I bought & downloaded on line for $9 yesterday. You actually get 4 converters for your $9.
By choosing MP2, you can then make these Youtube videos into a DVD using Nero, or another burner.
Even on a 47" LED full HD TV they look remarkably good, and the multi channel sound is awesome.
Just remember that conversions to MP2 and AVI etc. causes ilp sync. to be out, - but on documentaries it doesn't matter.
Oddly, when I use FVD for the Streak, I have noticed the audio and video sync. to be out. It seems to work just fine.