There are some new & returning shows starting in May/June (US channels). Here are some dates I've made note of.
Returning:
Burn Notice - June 4, USA \o/
Pushing Daisies - May 30, ABC \o/ (ETA: This is just the remaining, unaired episodes finally being aired.[/ETA])
Kings - June 13, NBC (I need to finish watching the ones that have already aired.)
So You Think You Can Dance - May 21, Fox
New (to US):
Glee - May 19, Fox
Mental - May 26, Fox (aka: Prison Break actors end up in a mental institution. As they should.)
Merlin - June 21, NBC (UK show. Yes, that Merlin! ETA: This is same season 1 that aired first in the UK. Not season 2.[/ETA])
The Listener - June 4, NBC (Canadian show. I heard this was painfully bad, but I'm curious.)
And a couple July shows on SciFi Channel (or SyFy *eyeroll*)
Eureka - July 10
Warehouse 13 - July 7
Also, some of the summer SciFi Channel movies sound lolarious:
High Plains Invaders, starring James Marsters. In the early 20th century, a small western mining town is invaded by giant insectoid alien creatures whose only mission is to mine uranium to fuel their spaceship, but they'll kill anyone or anything that gets in their way. After they devastate the town, it's up to a retired outlaw to lead a small group of survivors in fighting the "bugs."
Although, nothing could ever beat
Mega Shark vs Giant Octopus.
ETA: More July show dates!
Leverage - July 15, TNT