PresenTweetion is a presentation viewer for Twitter designed specifically for iPad, currently available in the app store.
You can do a Twitter search for a keyword, and it will display them in a "presentation view" for situations such as corporate events, music festivals, trade shows, or other events where you want to be able to display the social media reach of your brand or company without the clutter of a typical Twitter client. It displays full screen with no nav bar or control bars for an elegant and clean look, and with a iPad to HDMI or VGA adapter can be sent to any video projector or external monitor(s).
You can set the background colors and font colors to match your corporate style guides, add a logo or picture to the background, and turn the profile picture on or off in case you don't want the distraction of user's portraits in your presentation. You can even adjust the speed and animation style of the Twitter feed, from frantic scrolling to a gentle fade to a full stop.
It's available in the app store here: