I've had that happen twice at my current job, first time I told my boss I was applying and had an interview for another job and she gave me a 50 cent per hour raise, second time I had been working at another job for 3 months but was still in the system at my old job and my boss again offered me 50 cent more an hour than what I was working at my new job. Maybe I should try it again lol.
And blue this thread has been here since November if the title bothers you so much change it lol.