Android: Meshin Recall combines all of your Google calendars and shows you your appointments in one view. It also links your calendars with Evernote so you can make quick text, photo and audio notes, attach them to appointments, and save them to your Evernote account for quick reference.
If you use Google calendar to organise your appointments and you use Evernote to organise your thoughts and the things you find on the web, Meshin Recall could be a huge help for you. The default Google calendar app for Android allows you to view multiple calendars at once, so that's nothing new, but the hook to your Evernote account for notes and memos brings two great services together. Plus, your synced notes and appointments are automatically tagged and organised in Evernote so you can find them quickly and share them with other meeting attendees. Meshin Recall is free and available now in the Android Market.
Thanks to Leslie for sending in the tip!