iPython: clear current line

When you have some junk on the command line, and want to clear it, many interpreters (e.g., Matlab) would use <ctrl>-c. For reasons I don't understand, in the iPython command line, <shift><esc> will clear it up (while <ctrl>-z will undo your most recent action). If you really wanna go crazy, <ctrl>-l clears the entire screen.