One of my readers did ask if there is a way to find all the workflows that use a particular picklist.
A little bit of digging and here you go:
select
pppf.folder_name as [Folder],
ppf.folder_name as [Folder],
pf.folder_name as [Folder],
f.folder_name as [Folder],
w.WORKFLOWNAME,
pl.SHORTDESCRIPTION as PicklistName
from OC_WORKFLOWS w
inner join OC_SCREENS s on w.SCREENID = s.SCREENID
inner join OC_SCREENCONTROLS sc on s.SCREENID = sc.SCREENID
inner join OC_PICKLISTS p on p.PICKLISTID = sc.WORKFLOWPICKLISTID
inner join OC_PICKLISTLANGUAGES pl on pl.PICKLISTID = p.PICKLISTID
left join OC_ADMINCONSOLE_FOLDERS f on w.folderid = f.folder_id
left join OC_ADMINCONSOLE_FOLDERS pf on f.parent_id = pf.folder_id
left join OC_ADMINCONSOLE_FOLDERS ppf on pf.parent_id = ppf.folder_id
left join OC_ADMINCONSOLE_FOLDERS pppf on ppf.parent_id = pppf.folder_id
where pl.SHORTDESCRIPTION = 'Picklist Name'