My TOP 7 Time Travel K-Dramas

All 7 are definitely worth watching at least once or twice! I've personally watched Queen In Hyun's Man 3 times already just for the nostalgia -- it was such a well made show at the time... I'd say you could probably pass on watching Go Back Couple and Tunnel because they are lacking in some aspects compared to the other 5 (mainly the overall cast's acting abilities) but you should still try at least 1 episode just in case you might like them too..