One of the neat tricks is write out what Methods, Properties get-member cmdlet.  Here are a couple of replies I recently from my question in the Powershell newsgroup.  

Example 1
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It works well for static methods (note the parenthesis and square brackets
around the class name):

PS> get-member -in ([system.math]) -static

Example 2
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You don't need to assign to a variable. You can pipe the new object into the get-member call:

new-object text.stringBuilder | get-member -memberType methods

If you don't want to create an instance at all, you can use reflection:

[text.stringBuilder].getMethods() | % { $_.name } | sort -unique