Yes it possible. I write almost exclusively in the Entertainment sector and I have managed to make some money.
If you apply the same principles that you apply to your other Hubs then you can make money.
As Wesman Todd Shaw says, it's all about the HubPages Adprogram and being paid per impression as Hubs in the Entertainment category can get a lot of traffic.
You can also make sales from Amazon and earn from Google Adsense, when someone clicks an ad.
However, you need to get your Hubs ranked in Google to see the benefits of larger traffic numbers.
It's hard to share all the details here so I think I will write a Hub about it.