Any recommendation on the following

Projector with hdmi to use with iPads in classroom

LCD tv for wall for small meeting room/  5-6 people using iPads and or computer

Or any experience with portable projectors that have hdmi that they
are selling on amazon for couple hundred dollars aimed at iPods iPads
and portable gaming?
Would they be any use at all in small group work with iPads?

Of course this is all just a hold over until Apple patents come to fruitation :)