Available through next Monday, the half-hour shows, which aired earlier this season, will be available in their entirety and without commercials, CBS and Yahoo! announced. It is the first time that Yahoo! is streaming episodes of a CBS television series in their entirety.
The episodes of Two and a Half Men (which stars Charlie Sheen, Jon Cryer and Angus T. Jones) are We Called It Mr. Pinky and Madame and Her Special Friend.
The episodes of How I Met Your Mother (a freshman entry whose stars include Alyson Hannigan, Neil Patrick Harris and Josh Radnor) are The Pineapple Incident and The Sweet Taste of Liberty.
Both shows are regularly broadcast Monday nights on CBS.
The special webcasts are part of a growing movement of TV shows being made available to viewers through streaming video on their computers or via downloads to other devices.
For instance, with the recent introduction of Apple's video iPod, ABC began making available reruns of series including Lost and Desperate Housewives for download to iPods at $1.99 per episode. NBC offers same-night replay of Nightly News online at no charge.
TiVo has announced that, starting next year, any show recorded on its Series2 digital video recorders can be transferred to an iPod. And AOL will soon make available episodes from some 30 classic TV series for viewing on an online AOL channel.