#in $ZOPE/Extensions create availableWorkflists.py, paste the below in

from Products.CMFCore.utils import getToolByName

def getWorklists(self):
    """ instead of manually scraping actions_box, lets:
        query for all worklists in all workflow definitions.
        Returns a dictionary whos value is sequence of dictionaries

        i.e. map[workflow_id]=(workflow definition map, )
        each workflow defintion map contains the following:
        (worklist)id, guard (Guard instance), catalog_vars (mapping), actbox_name (actions box label), and actbox_url (actions box url)
    """
    wf_tool=getToolByName(self, 'portal_workflow')
    wf_with_wlists = {}
    for id in wf_tool.getWorkflowIds():
        wf=wf_tool.getWorkflowById(id)
        if hasattr(wf, 'worklists'):
            wlists = []
            for worklist in wf.worklists._objects:
                wlist_def=wf.worklists._mapping[worklist['id']]  
                a_wlist = { 'id':worklist['id']
                          , 'guard' : wlist_def.getGuard()
                          , 'catalog_vars' : wlist_def.var_matches }                
                name = getattr(wlist_def, 'actbox_name', None)
                if name: a_wlist['name']=name
                url=getattr(wlist_def, 'actbox_url', None)
                if url: a_wlist['url']=url
                wlists.append(a_wlist)
            wf_with_wlists[id]=wlists
    return wf_with_wlists

def testGettingWorklists(self):
    wf_tool=getToolByName(self, 'portal_workflow')
    if not hasattr(wf_tool, 'getWorklists'):
        wf_tool.getWorklists = getWorklists
    for wflow_id, wlist_seq in wf_tool.getWorklists(self).items():
        for wlist in wlist_seq:
            permission=wlist['guard'].getPermissionsText()
permission)

#in the root of your CMF create a External method
#module: availableWorkflists
#function: getWorklists

#the Script(Python) I use to find out what objects I can review are:
wf_wlist_map = context.getWorklists() #getWorklists is currently a external method ;(
catalog=context.portal_catalog
avail_objs = []

for wlist_map_sequence in wf_wlist_map.values():
    for wlist_map in wlist_map_sequence:
        permission=wlist_map['guard_permissions']
        catalog_vars=wlist_map['catalog_vars']
        if context.portal_membership.checkPermission(permission, container):
            for result in catalog.searchResults(catalog_vars):
                avail_objs.append(result.getObject())

return avail_objs