If you want to get a taste of the graphic potential of the new iPad you might want to try:
RealRacing 2 HD and InfinityBlade II.
Also for streaming video over your home wifi network try AirVideo.It requires a small app to be installed on the host pc.It can play most files regardless of file type as live conversion takes place.
Another flash Cydia app would be Quasar which is exactly how multitasking should occur on the iPad.
I'm not promoting piracy here but considering you may not keep the iPad and considering a lot of what I've recommended costs $ you may want to trial before purchasing the "free" versions available in Cydia on the repos I've recommended. The version of the apps which are paid displays in blue while the version of the same app available "free" is displayed in black.