Kirra, I think you'd dig
Supernatural. Great, great show. Sort of a grown-up
Buffy, or a rock-and-roll
Angel. Starts off good, gets better toward the end of the first season, and blows the doors off from the second season on.
I'm new to the
Doctor Who audience, but I'm deeply, deeply in love with the show. Start with the 2005 Eccleston revival and watch to present day (everything but the most recent half-season is available on Netflix/Amazon Prime).
Veronica Mars is a brilliant show, a sort of teenage Nancy-Drew-by-way-of-Humphrey-Bogart. Instant crush on Kristen Bell due to this show. Smartly written, acted, and plotted. I disagree with Talya that it ends on a cliffhanger; there was obviously more story to be told, but thematically it works for me, in the most melancholic and noir-ish of ways. Network meddling caused a rather uneven third (and final) season, but brilliant nonetheless. As a
Buffy/
Angel fan, you should know that Joss Whedon was such a huge fan of the show that he lobbied hard for (and won) a small cameo role in the second season.
30 Rock is a brilliant comedy that had me pausing the Netflix stream multiple times per episode just to catch my breath from the laughter. Like Katas says, it's showing some age, but still solid, and the first three or so seasons are hilarious.
Along the same lines,
Parks and Recreation. It was created by the same guy who handled the American version of
The Office, but in this case, it's actually really, really funny. The show starts off a little uneven, but quickly the characters win you over and you become quite involved in their lives; the best part is that the humor actually grows from the characters, unlike most other comedies.
Castle is something about which I feel a bit torn. On the one hand, I love the cast, particularly Fillion and Katic, as well as the support staff. The episodes are always solidly done. I've grown a bit fatigued with the show, however, due to its steadfast refusal to break out of its rut. The tail end of the third season was a good step in the right direction, so I'm hoping it'll reinvigorate the show a bit. Always a good time, just frequently forgettable 20 minutes after the credits roll.
Firefly...watch this before
Castle. You'll see why. Also, brilliant. Short-lived sci-fi/western hybrid from
Buffy mastermind Joss Whedon. Follow it up with the feature film continuclusion,
Serenity.
Arrested Development is another great comedy. It may or may not be your thing. Give it a shot, though.
If you like
Arrested Development, chances are you'll like
Better Off Ted. I actually like the latter more. Single-camera office comedy, but a lot more than just that. On Netflix, highly recommended.
Katas brought up
Sports Night. Now, I'm the least sports-interested person you're likely to ever meet (provided you consider conversing on a message board "meeting"). The tagline says it all, though: "It's about sports. The same way
Charlie's Angels was about law enforcement." Everyone with whom I've ever worked in television wants to work at Sports Night. It's written by Oscar-winner Aaron Sorkin and is utterly brilliant. One of the classics.