There's an article on WoTC website with lots of new rituals :
http://www.wizards.com/default.asp?x=dnd/drfe/200808011a
http://www.wizards.com/default.asp?x=dnd/drfe/200808011a
Not bad.
The 10 minute minimum casting time really sucks, though, IMO. Wizard's Curtain would be something really fun, but the 10 minute casting time ruins any comical effect not related to peeping. Preserve Flame could really come in handy during a pinch, but the 10 minute casting time really limits its usefulness.
Need to come up with a decent set of houserules to fix this...
While I think 10 minutes a minimum may have been overboard, they really don't need to be shorter. Rituals aren't supposed to be something you use when the the boulder is rolling down the hill at you.
That said - I daresay you could come to an agreement with your DM that basically says that you can somehow pre-prepare or use rituals instantly in exchange for not abusing that power.