I am running a contest on my blog post that can help you win a 1 year subscription worth £150 of digital library at Packt Publication to win that you just need to describe the best HA+DR solution you have designed or worked upon...refer the complete detail here http://www.sql-server-citation.com/2011/03/describe-ha-and-dr-strategy-and-win.html
Hemant On a second thought I believe it is good to differentiate betwen HA & DR, than combining them into 1 solution. So I would ask to phrase the question to provide HA and DR solutions (as two answers) in this case.