Text pasted into your browser when using a rich text editor like the one found in Gmail automatically takes on the formatting of the source text. Google Chrome now supports text stripping via CTRL + SHIFT + V.
Previously you would have had to copy the text into a format-neutral space (like Notepad) and then copy it into Chrome. This is quite a bit easier, and works very similarly to our own Better Paste helper utility for Windows. It's a small feature, but potentially very handy.