There's a special coming on next week. Looks like another recap type episode.
Special: Lost: Reckoning
Airdate: April 26, 2006
04/17 - The survivors of Oceanic flight 815 have been locked in a test of faith ever since they crashed on the island. Discover how this faith has been tested for both the fuselage survivors and tailies. Are you a person of faith or science? This is the dilemma that plagues the island survivors and also defines their character. Discover how faith in the hatch led Locke on a mission to find a way inside, and how his discovery of Desmond led to his belief that punching in the numbers every 108 minutes would ensure everyone's survival. In addition, Michael's dogged mission in finding Walt, the tailies fight for survival during their first 48 days through their collision with the fuselage survivors, the uncertainty of prisoner Henry Gale's allegiances, and tensions between the survivors and "The Others" have left everyone questioning what they believe in. Additionally, the healing powers of love are explored through a timid Hurley's struggle with asking Libby out on a date, through the strong bond between Sun and Jin, and through Jack and Sawyer's mutual - yet unrequited - attractions to Kate. Source: ABC
Episode 2.20: Two for the Road (Ana-Lucia-centric)
Airdate: May 3, 2006
04/17 - Guest starring are John Terry as Christian Shephard, Rachel Ticotin as Captain Teresa Cortez, Michael Emerson as Henry Gale and Gabrielle Fitzpatrick as Lindsey. Source: ABC
04/09 - Jack and Kate bring an exhausted Michael back to the camp, and with him, news about "The Others." Meanwhile, Ana Lucia attempts to get the prisoner to confess, and Hurley plans a surprise date for Libby. Source: ABC
Episode 2.21: ? (Eko-centric)
Airdate: May 10, 2006
04/18 - In a flashback at the airport, Charlotte delivers a message to Eko and Libby asks if if everything is all right. Source: Aloha Oe and call sheet at SurvivorSucksForum
04/01 - Turns out that supercool black-light reveal is a major plot point that carries on through the rest of the season. "Oh yeah, big time," Damon said. "I mean, it plays huge in the finale, and even in episodes 21 through 24. Twenty-one is an episode that is very much on the sort of fundamental axis of that map, and it's a Locke and Eko story, which is going to be awesome. [Executive Producer] Carlton [Cuse] and I wrote it. That episode is just called '?' because that is the symbol Locke remembers from the map." Source: Kristin on E!Online
03/23 - Claire (and possibly another Lostaway)-centric, featuring Charlotte a 16ish Australian who suffers a near death experience. Source: SecretAgentMan at TWoP [Note: It seems that it may not be Claire-centric but that she will appear in the flashback.]
Episode 2.23: Live Together, Die Alone (2-hour season finale)
Airdate: May 24, 2006 from 9 to 11 p.m.
04/18 - [Quite spoilery, highlight at your own risk... In flashback that is set in 2000 in L.A., Libby buys Desmond coffee and offers him her boat. Charlie and Eko enter the hatch to get dynamite. Rose and Locke have a chat. Later in the episode, we see Desmond lying on the beach shore, waking up, being carried to the hatch, and Desmond and Kelvin walking through the jungle. While in prison (not sure if it's on island or flashback), Widmore tells Desmond off. There will be one scene of Desmond in the stadium. Dr. Candle will appear.] Source: Aloha Oe and call sheet at SurvivorSucksForum
04/18 - The episode will feature Gregg, an athletic stockbroker type who loves his job and the company that employs him. Source: SpoilerFix.com
04/15 - The episode will feature two foreign computer technicans working in a remote drilling station. Source: SpoilerFix.com
04/11 - Guest stars for season finale: Cameron, British (Rupert Murdochish) 50, rich steel tycoon, ruthless, competitive, protective of his daughter; Penelope, late 20's, beautiful, strong, daughter of Cameron, wants a simple life, to fall in love and start a family. Though she has no interest in her family's money she eventually uses it to get what she wants. Source: SecretAgentMan at TWoP
04/05 - We'll see Vincent in the finale. Source: Ask Ausiello @ TV Guide
General Season 2 spoilers:
04/18 - It might look as though Kate and Jack are zooming toward coupledom, but there's a serious wrench by the end of the season! There will be two deaths. Source: Kristin on E!Online
The highlight at your own risk came from Spoilerfix, not me (very interesting, though). Also Jack's dad is guest starring in AL's episode. I wonder if he'll appear in her flashback?
I read over on the ABC boards that the next new epi would be in MAY 
