You will find the same with actors.

The Show Stitchers is a good example, the lead is pretty much unknown, she carries the entire show(you don't expect someone that looks the way she does(former model) playing a character like that well and she knocks it out of the park...), went from being an up and cumming actress with some serious ability to only having minor bit roles after that series....................

Looks and possibly the casting couch may have played a part in her getting the lead role but I have a feeling she completely blind-sided them in regard to a pretty blonde model not letting herself get pushed into taking the deal and having brains and backbone...

There are many other examples like this but this series was the largest and most glaringly obvious example I could think of..

You will find the same with actors.

The Show Stitchers is a good example, the lead is pretty much unknown, she carries the entire show(you don't expect someone that looks the way she does(former model) playing a character like that well and she knocks it out of the park...), went from being an up and cumming actress with some serious ability to only having minor bit roles after that series....................

There are many other examples like this but this series was the largest and most glaringly obvious example I could think of...