I like doing single arm rows because it forces you to use your abs / core to brace yourself and prevent rotating your torso. (ptinto.com)
Other compound lifts to add to your workout include the lat pull down, assisted pull ups, seated row and single arm row for back development. (mystrengthtraining.com)
I felt rather proud of myself afterwards at some of the weights I shifted (hello, 20 kilo single arm rows!). (sweatlikeapig.com)