https://talky.io lets you video call up to 5 other people for free. No account, signup, plugins, downloads necessary.
Just visit a url to start a group video call and tell people to join you there.
For example anyone who is at https://talky.io/lets-talk in a modern browser immediately jump into a video call with whomever else is at that url.
No configuration. No accounts. No logins.
Calls are encrypted between users and are powered by WebRTC.
I'm pretty sure there's no faster/easier way to call a meeting on the interwebz.
No more Skype or setting up Google Hangouts.