If you're looking for some auditions, here are some good resources to check out.
ActorsAccess.com - Registration is free so every actor should set up a profile to be listed in their "breakdown database." You can then choose to subscribe to their Showfax service, which allows for unlimited submissions to roles that fit your type. This has fast grown into a powerful tool for actors, agents, casting directors, and other industry professionals.
Actors Equity Casting Call - If you're one of the 49,000 actors and stage managers who are part of the labor union, one of the benefits is access to auditions for "union only" productions. It offers a detailed list of paying gigs and "Equity Showcase" opportunities.
Casting Call Hub - The site is a rundown of major casting news in show biz. There are plenty of ads to grab the interest of any aspiring actor, but the smart performer will use the information to boost their knowledge of who's who in the casting industry and learn what casting trends are emerging.
Casting Networks - This international company provides professionals with the software and other tech tools meant to simplify the casting process. In the old days, headshots and resumes were always hardcopies, but now the shift is definitely to online digital.
CentralCasting.org - Are you seeking work as a background actor? Being an extra can be a nice source of supplemental income. While there are a lot of shady establishments out there taking advantage of naive beginners, Central Casting is one of the most reputable companies since its inception in 1925.
Craigslist - You can find the occasional gig listed here, just do your due diligence to make sure it's legitimate.
ExploreTalent.com - It touts itself as the "world's largest talent resource," and it does list thousands of auditions, so it's worth a look.
Indie Film Casting - If you're looking for a job on an independent or student film production, this is an excellent place for information.
Mandy.com - The international film and television production resources site offers some good listings for various auditions out there.
NOW Casting - Post a casting notice, browse auditions, even post your audition online where applicable -- it's a brave new world.
NYCastings - Their motto is "Where Productions Find Talent," and if for nothing else their list of informative articles is a good enough reason to visit their site.
Playbill - There is plenty of information on theater here, plus some good, reliable casting notices here too.
SAG Indie - Are you a member of the Screen Actors Guild? You don't just have to rely on big studio productions to find work, there are plenty of smaller independent films looking for actors, and this site gives you the inside scoop on what's available.
StarNow.com - I've had a good experience with this site, both having directors contact me for a potential role and getting the word out about a show I was producing so we had a nice turnout of potential actors for our auditions. Give it a shot.
If there's a local theater company in your area whose productions you enjoy, you should also join their mailing list and frequently check out their Web site for casting updates. Break a leg to all of you!