Jim Cramer's Mad Money Lightning Round Picks 4/28

Lightning Round stock picks from Jim Cramer's Friday April 28th Mad Money TV program. Click on a stock ticker for more analysis:

Bullish calls:

Ultra Petroleum Corp (UPL) -- 'the company's a winner, I'd buy more right here'
Peabody Energy Corp (BTU) -- 'there are two factors in a coal stock: how long-lived their assets are -- BTU has the longest, and is it low sulfur or high sulfur -- BTU's is low sulfur. The bottom line -- it's best of breed, it has both of them right'
Finisar Corp (FNSR)
BHP Billiton (BHP)
Southern Copper Corporation (PCU)
Ladish Co. Inc (LDSH) -- 'in the sweet spot... buy on pullback, 2-3 points lower'
Boeing (NYSE:BA)
Amerada Hess Corp (AHC) -- 'that quarter was a beautiful thing... any more political speak that brings the stock down into the 130's and then we're there'
Houston Exploration (THX)
Hana Biosciences Inc (HNAB) -- 'we like Cancer care... I think it goes higher, but be careful'
Energy Partners Ltd (EPL) -- 'number one independent name in US... CFO departed two days after I recommended it... worth the money, you stay long it, you will not be disappointed.'

Bearish calls:

Travelzoo Inc (TZOO) -- '1/3 of the float is short, shorts panicked on good quarter, took it up to 52, now it's pulled back to 38... don't buy because I don't know if the shorts are going to reload'
Tanzanian Royalty Exploration (TRE) -- 'we have so many high quality mineral companies, why do we have to go way down the food chain?'
Moody's Corporation (MCO) -- 'that quarter was a bit of a surprise... we're saying goodbye, because I don't like disappointment'
Covad Communications Group Inc (DVW) -- 'dubious business model.. going up because Comcast reported a good quarter, because people think they're going to be doing alot of internet, DSL fast lines... I don't trust DVW'
International Securities Exchange (ISE) -- 'I liked it ten points ago, I see the NYSE going down every day...'