iphone - Shared action for many UIButtons, get button-specific string -

i have view containing number of uibuttons "tom , jerry", "the lion king", etc. want of them invoke same action in view controller, , differentiate between different buttons button-specific nsstring (e.g. identifiers "tomjerry", "lionking").

ideas:

1. abuse buttons' title text property (custom button style, clear text color).
   • would work, feels dirty… (and works if button doesn't need display text.)
2. subclass uibutton ivar + property "context".
   • great adding buttons programmatically,
   • but: view loaded nib, have define outlet every button (and set context property in awakefromnib or viewdidload). bleh…
3. create subclass each button different "-(nsstring*)context" method implementations.
   • ugh… seriously? ;-)
4. use tags identify buttons , dictionary mapping tags button-specific strings.
   • dry violation: tag need known/specified twice – in nib identify button, , in dictionary retrieve corresponding string.
   • i have far avoided using tags. maybe opportunity start?

how best achieve this? ideas, best-practices, implementation patterns?

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update: after reading first answers (thanks!), believe should add points clarification.

all of above approaches should work; point is, don't particularly like of them. asking of approaches favor (and why), or whether there other better approaches.

further "requirements":

• i don't want connect each button outlet.
• i want retrieve button-specific string in generic fashion, i.e. no switch on action sender à la if (sender==self.button1) {…} else if (sender==self.button2) {…}

added
option create category of uibutton adding method returns nsstring based on tag. you've still got potential tag trouble tag-to-string conversion -- actual , conceptual -- in 1 place.

i believe meets original , further requirements.

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previously
tags fast , light, comparing 2 integers.

you can create numbering scheme keeps things cleanly separated: 1000-1999 type of thing, 1000-1099 subgroup, 1015 instance, etc.

numeric comparisons available: x.tag > 10000 this.

obviously, though, means have track , code end difficult parse down road. still, nifty advantages.