Visit tv.com, you find all the series there and statuses too. There are many tips already and now I guess you just need to find the gems from there. Im kind of addict too and atleast I liked these(you have not watched):
- Weeds (comedy,drama)
- Human Target (action) Status: cancelled but ending wasnt cliffhanger, 2 seasons to watch there.
- Castle (cop-series) Good one still going and just started watching it myself
- Boston Legal (law,comedy) Status: ended - one of the best law series I've ever watched, a true gem!
- House (medical,drama,comedy) Status: finale season still coming - Excellent show, you need to watch it!
- Rookie Blue (cop-series,drama) potential cop series 2nd season coming soon.
- The Vampire Diaries (vampire,drama,action) Oh well if you are into true blood I guess you could watch this too. Filler show for me but it does its job.
- The Unit (action,drama,war) Status: ended - good show about delta forces and their wives, 4 seasons.
- NCIS and NCIS:LA (criminal investigation) - Good shows, going strong and one of the most popular crime shows at the states atm. Spinoff is watchable too, actually pretty good.
Well there is some tips and btw SG-U wasnt that bad, cast was pretty good and atleast I was abit disapointed when they cancelled it. Atleast I rooted with sgt. Greer so much that it would've deserved another season