I've had mixed success calibrating my LG TV and my few-years-old ASUS ProArt PA246Q monitor, using DisplayCAL and my Spyder 3 Pro.
Starting with the TV set in Game mode, and all the interpolation, smoothing, sharpening etc. off, I got a good calibration by following the tutorial. However the calibration on the ASUS monitor just kept coming out too pink. On the right is the TV and on the left is