For the networks, the month of May means just one thing: Sweeps -- the time of year where the Big 4.5 networks pull out all the stops to end their seasons with high ratings and, hopefully, increased ad revenue.

For ABC, this is a particularly important Sweeps period. Not only are a number of renewed freshman and sophomore series ending in the next few weeks, but the network's flagship program -- 'Lost' -- is completing its long and complicated run. Needless to say, they've packed the schedule with guest-stars, trips to exotic locales, and a return of 'The Bachleorette.'

As mentioned, the series finale of 'Lost' is big doings. On Sunday, May 23rd, the network will air a two-hour 'Lost Recap Special' starting at 7:00 p.m. followed by the last episode at 9:00 p.m.. To the cap the night off, Jimmy Kimmel will interview the creators and cast of 'Lost' on a special Sunday edition of 'Jimmy Kimmel Live.'

More highlights can be found after the jump. Be warned: minor spoilers ahead.