My book has quite a few exercises. On a weekly basis my hamstrings are sore since they are a tad weak being a cyclist \ wannabe runner.
One legged romanian dead lifts help the hamstrings.
Squats help both.
Invisible chairs, lunges, side lunges, and squat jumps are others. Squat jumps and burpees are fun as heck btw.
Squat jumps you start from a squat and jump as high as you can. Land and repeat. It gets painful quite fast.