Let's get the duplication allegation out of the way.
I saw couple of variations of this question, notably, link. However, it doesn't address issue specific to C# developers. I want to collect a list most used/powerful/cool tricks--tips in VS from people who are using C# under visual studio 2005 (it's ok to mention for 2008 as well). Below are the links that I have used as a guide:
msdn <-- our guys from Microsoft have a tip or two to share
Kirill's Visual Studio Tips <-- This blog also has couple of good links
Debugging tips are also encouraged
Thank for sharing your tips and increasing my productivity :)
Some of my arsenal:
- Ctrl+-, Ctrl++, navigates back and forward where you've been recently 
- Ctrl+Shift+V, which will cycle through your clipboard history 
- F12 to go to definition of variable. 
- Ctrl+K, Ctrl+C to comment a block of text with // at the start 
- Ctrl-K, Ctrl-U to uncomment a block of text with // at the start 
- Ctrl+/ to get to the find box. 
- Ctrl+I for incremental search, F3 to iterate 
- Select an expression/variable in debug mode and type Ctrl+D, Ctrl+Q to open the quick watch window. 
 
     
     
     
     
     
     
     
    