Is it possible to group entries by checkbox? We're looking to output a list of entries and group them by their check box values. Here's what we've got so far:

{% for checkbox, entries in craft.entries.section('my_entries').find() | group('checkbox') %}
   {{ checkbox }}
{% endfor %}


This currently returns "Object of class Craft\MultiOptionsFieldData could not be converted to string".

Any ideas? Is this even possible?
What Brad says, plus an example of grouping by selected checkbox:

{% set entries = craft.entries.section('my_entries') %}

{# get all checkbox options #}
{% set options = entries.first().checkbox.options %}

{% for option in options %}
    &lt;h2&gt;{{ option }}&lt;/h2&gt;
    &lt;ul&gt;
    {% for entry in entries if entry.checkbox.contains(option) %}
       &lt;li&gt;{{ entry.title }}&lt;/li&gt;
    {% endfor %}
    &lt;/ul&gt;
{% endfor %}