I finally jumped on the Powershell bandwagon earlier this year and have had no regrets. I felt that learning Powershell would be a good way to enhance my skillset in the event that I found myself in need of another job during terrible economic times. Although I initially had considerable trouble locating useful resources that were geared toward using Powershell in SQL Server Administration, I persevered and it has paid off. I finally stumbled on to a really well written book "Learn Windows Powershell in a Month of Lunches" by Don Jones (a renowned Powershell expert) and although it doesn't contain a plethoria of SQL Server related information, it does contain enough to get started. I've since written a couple of really useful scripts. One inventories server configurations and the other, which is a work in progress, is used to troubleshoot SQL Server Performance Issues.

I would highly recommend taking the time to learn Powershell for anyone that wishes to enhance their skillset and potentially improve their marketability.