Missing backtick from soft keypad
On my Galaxy Nexus with the default Android keyboard I see the backtick (aka grave) on the secondary symbol screen. ?123 then =\&lt; and ` is the second key in the top row.

I normally use SwiftKey 3, however, and I find it as one of the options on a long-press of ' on the secondary keyboard (accessed by pressing the 123 key).