While the How I Met Your Mother series finale was by no means a Dexter-level disaster, fans were left scratching their heads at the perplexing decision to make perpetual bachelor bro Barney get married to Robin, only to divorce three years later so she and Ted could finally, inevitably get together.
While the characters she played on Buffy and How I Met Your Mother are quite different, they both serve as the amusing comic relief.
In Buffy, she played the role of Willow Rosenberg, a shy teenage computer geek who grows to become a confident witch with great powers and not always great responsibility.