In my opinion hands down the best launcher available for a handset, is Go Launcher. The amount of customization, widgets, animations, and themes available for this launcher are insane. From a tablet perspective, I love the stock launcher and haven’t thought about using a different launcher until now. The Go team have released a beta version of Go Launcher HD for tablets.
The launcher may still be in beta, but it is very polished and quick and easily can be a daily driver. The only thing it is missing is customization as for now you can only customize is the grid size for the home screens, and app drawer. As the beta goes on I’m sure more customizations will be added in and the launcher will be as successful as the handset version.
Get the launcher from here as it is not available from the market just yet.