From my experience, the best way to describe the Jericho demo is a doom atmosphere ( bigger levels though ) with rainbow six like gameplay. Each member of the Jericho team has a special power.
I downloaded all the NBA demos for the PS3 and I must they are all horrible. I am a long time 2K fan but, like someone mentioned, NBA 2k8 looked worse than NBA 2k7. WTF. On the otherhand I loved the Jericho demo, it gave off a Doom feel of suspense, I'm definitely picking this up along Folklore...
I had high hopes for Heavenly Sword but after playing the demo I was disappointed. This game on the other hand surprised me, the atmosphere is similar to Disney's Labyrinth but more violent. I just wish their was voice acting and a jump button.
You have to make sure your monitor is compatible with a certain signal type. Newer monitors have no problem but I had a 20.1 widescreen Dell from about 3 years ago which did no work with the signal.